PHOENIX – Hello from the Valley of the Sun, where the temperature is only topping out in the 80s this weekend. Which means the roof at Chase Field will be open both tonight and Saturday. Around here, that’s a huge win.

Speaking of huge wins, the Nationals are coming off a big one over the Cubs to cap a solid homestand. They’ll try to keep their winning ways alive on the road, where they’ve been a much better team so far this season.

The good news: They’ve got Josiah Gray on the mound for tonight’s series opener against the Diamondbacks. The bad news: They almost certainly don’t have either Hunter Harvey or Kyle Finnegan in their bullpen after those guys each pitched the last three days. Quality innings from Gray will be key tonight, and then someone else from Davey Martinez’s bullpen will have to close it out.

A lineup that started to show signs of power back home will hope for more of that in the warm, dry air here. This has always been a good hitter’s park, and it’s even more so when the roof is open. The Nats will try to hit some balls in the air tonight against Arizona right-hander Merrill Kelly.

WASHINGTON NATIONALS at ARIZONA DIAMONDBACKS
Where: Chase Field
Gametime: 9:40 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Clear, 79 degrees, wind 12 mph left field to right field

The Nationals will look to win this four-game series against the Cubs this afternoon on South Capitol Street after taking the last two games. A win will also give them a winning homestand. They’ll hop on a flight tonight and embark on a six-game West Coast road trip to Phoenix and San Francisco after finishing with Chicago.

Patrick Corbin will take the mound for his seventh start of the season, fifth at home, bringing his 1-4 record, 5.74 ERA and 1.660 WHIP. The numbers still don’t impress, but Corbin has been better so far this year in keeping the Nationals close. He has departed the game with his team ahead, tied or within two runs in five of his six starts, and he has turned in quality starts in two of his last three outings with a much better 4.15 ERA over those games.

The Cubs will activate Jameson Taillon from the injured list to start for the visitors. The veteran right-hander went down with a groin strain after only three starts, going 0-2 with a 4.50 ERA and 1.357 WHIP. He’s 0-1 with a 3.86 ERA over five career starts against the Nats and 0-1 with a 3.32 ERA over three starts at Nationals Park.

Today will be the Nats’ last chance on this homestand to improve their record at Nationals Park. Overall, they’re 5-12 at home while actually playing above-.500 ball on the road with a 7-6 record. They’re 3-3 so far on this homestand.

CHICAGO CUBS at WASHINGTON NATIONALS
Where: Nationals Park
Gametime: 1:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 The Fan, MLB.com
Weather: Mostly cloudy, 58 degrees, wind 9 mph in from left to right field

The Orioles will try tonight to claim their seventh consecutive series, two short of the club record set in 1968.

They fell behind 3-0 last night and registered their 10^th comeback victory of the season to improve to 20-9, the second-best record in the majors. They’ve won five of their last six games, 12 of 14 and 16 of 20.

Austin Hays and Gunnar Henderson are out of tonight’s lineup.

Kyle Stowers is playing left field and batting fifth. Ramón Urías is the third baseman, with Adam Frazier at second base.

Ryan Mountcastle is the designated hitter after homering twice last night, and Ryan O’Hearn is playing first base.

There’s nothing quite like a major league debut, especially when the guy debuting is a starting pitcher. No, Jake Irvin isn’t a top prospect in the Nationals organization, and his start tonight isn’t as significant as Cade Cavalli’s debut last summer. But it’s still a big deal for any pitcher who was drafted, developed and moved up the organizational ladder to see his dream come true and start a big league game.

Irvin is no kid; he’s 26 years old, drafted in the fourth round in 2018 out of the University of Oklahoma (where he was teammates with Cavalli, by the way). He missed the 2021 season while recovering from Tommy John surgery but was healthy throughout the 2022 campaign, reaching Double-A Harrisburg. The Nats added him to the 40-man roster this winter, and now they’ve called him up after five starts at Triple-A Rochester.

Irvin isn’t the only addition to the Nationals’ roster for tonight’s game. Infielder Ildemaro Vargas has been activated off the 10-day injured list, his left shoulder now healed. To make room for both players, Jeter Downs and Cory Abbott were optioned back to Rochester.

The Nats will be looking to make it two in a row against the Cubs, who have veteran Marcus Stroman on the mound. The 32-year-old right-hander has been excellent so far, with a 2.29 ERA and a 1.047 WHIP through his first six starts of the season.

WASHINGTON NATIONALS vs. CHICAGO CUBS
Where: Nationals Park
Gametime: 7:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Chance of rain, 53 degrees, wind 14 mph left field to right field

The Orioles will try to improve to 10-0 in series openers tonight when they visit the Royals at Kauffman Stadium.

Manager Brandon Hyde is keeping Austin Hays in the leadoff spot against a left-hander, with Cedric Mullins lowered to ninth.

Jorge Mateo is batting fifth again. James McCann is the designated hitter. Gunnar Henderson is the third baseman.

Mullins has a .458 average with runners in scoring position that ranks seventh in the majors among batters with a minimum 15 plate appearances.

Mateo is trying to become the first Oriole to score a run in eight straight games since Mullins in 2021, according to STATS. Mateo’s 21 runs this season are the most through the first 23 games since Trey Mancini scored 22 in 2019.

On the heels of an impressive 4-2 road trip to Minnesota and New York, the Nationals have sputtered back home. They’re currently 1-3 against the Pirates and Cubs and in danger of assuring another losing homestand if they can’t get things together quickly.

A victory tonight would certainly help. And some offense would certainly help make that more possible.

The Nats were held to one run on six hits Monday night by Drew Smyly and a couple of relievers. They’ll need to be better against Hayden Wesneski, who enters with a 5.24 ERA but has actually pitched quite well in two of his last three starts. The 25-year-old right-hander held the Athletics to one run over seven innings, then held the Padres to one run over five innings last week. He’s averaging only 75.8 pitches per start, so he probably won’t be around too long tonight, if the Nats can make him work a bit.

Trevor Williams gets the ball for the Nationals, facing one of his former teams for the second straight outing. The right-hander had maybe the worst of his starts to date in New York last week, allowing four runs on nine hits over five innings, a performance that kind of got lost in the shuffle because of CJ Abrams’ late grand slam and Mason Thompson's struggles after that during a 9-8 loss to the Mets.

WASHINGTON NATIONALS vs. CHICAGO CUBS
Where: Nationals Park
Gametime: 7:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Chance of rain, 56 degrees, wind 11 mph left field to right field

One month into the season, we can pretty much divide Nationals games into two categories: Games started by Josiah Gray and MacKenzie Gore, and games started by everyone else. That doesn’t mean those other games haven’t been interesting, or that the others haven’t pitched well at times. But clearly Gray and Gore starts are the most significant events this team has right now, and most of them have lived up to the hype.

Gray did his part Sunday, allowing one run over six innings to defeat the Pirates. Gore gets his shot tonight when he takes the mound for the series opener against the Cubs. The lefty is coming off a dominant outing in New York in which he struck out 10 and allowed only one run in six innings. Gore faces a new challenge tonight in a Chicago lineup that leads the National League in batting average, on-base percentage and OPS, while ranking second in runs scored.

The Nats lineup will hope to have some success against left-hander Drew Smyly, who nearly made some major history himself two starts ago when he carried a perfect game against the Dodgers into the eighth inning until it was broken up by a little dribbler in front of the mound and Yan Gomes’ inexplicable decision to bowl over his pitcher in pursuit of the ball.

WASHINGTON NATIONALS vs. CHICAGO CUBS
Where: Nationals Park
Gametime: 7:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Chance of rain, 58 degrees, wind 13 mph out to center field

NATIONALS
LF Alex Call
2B Luis García
3B Jeimer Candelario
DH Joey Meneses
C Keibert Ruiz
RF Lane Thomas
1B Dominic Smith
CF Victor Robles
SS CJ Abrams

DETROIT – The string of opposing left-handed starters ended at three today, and so did Joey Ortiz’s time in the majors.

Ortiz was optioned to Triple-A Norfolk, with outfielder Kyle Stowers rejoining the Orioles for their series finale in Detroit. Ortiz went 2-for-8 with four RBIs while making three starts at second base.

The Orioles optioned Stowers on April 9 to give him more consistent at-bats. He was 0-for-4 with two walks in three games.

Stowers was batting .293/.427/.569 (17-for-58) with a double, five home runs, 17 RBIs, 13 walks and 17 strikeouts in 17 games with the Tides.

Manager Brandon Hyde is batting Stowers fourth today and playing him in right field. Ryan O'Hearn is the designated hitter.

You won’t believe this, but it’s raining again here in the nation’s capital. I know, I know. Nobody could’ve predicted that. Actually, everyone predicted it, and that’s why today’s series finale between the Nationals and Pirates is very much up in the air. The problem: This is the Pirates’ only trip here this season, so they have to do everything they can to try to play this game today, lest they make them make another trip here on a common off-day later in the year.

The Nats desperately need a quality start from Josiah Gray after a doubleheader mess Saturday in which Davey Martinez had to burn up most of his bullpen. Gray has been very good, of course, since his first start of the season. He’ll be challenged to hold down this surprisingly potent Pittsburgh lineup, though, today.

The Nats also desperately need some production from a lineup that scored four total runs in 18 innings Saturday (and one of those was Dominic Smith’s garbage-time homer in the bottom of the ninth with his team trailing 16-0). They’ll face a tough right-hander in Johan Oviedo, who enters with a 3.03 ERA and 29 strikeouts in 29 2/3 innings.

WASHINGTON NATIONALS vs. PITTSBURGH PIRATES
Where: Nationals Park
Gametime: 1:35 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Rain, 61 degrees, wind 7 mph in from right field

NATIONALS
LF Alex Call
2B Luis García
C Keibert Ruiz
DH Joey Meneses
3B Jeimer Candelario
1B Dominic Smith
RF Lane Thomas
SS CJ Abrams
CF Victor Robles

The Nationals had a chance to win the opener of today’s doubleheader but couldn’t take advantage of their scoring opportunities and then watched as their “B” bullpen gave up the lead late. They’ll hope to jump out to a lead in tonight’s second game against the Pirates, giving Davey Martinez reason to turn to his “A” bullpen to close it out.

Chad Kuhl gets the start against his former team. Emotions will be high for the right-hander, but the Nationals need him focused on throwing strikes and avoiding the walks and high pitch count that plagued him in Minnesota one week ago. With Kyle Finnegan, Hunter Harvey and Mason Thompson all fresh, they need only five decent innings from Kuhl to put themselves in position to win.

The lineup includes a few changes from the opener. Lane Thomas takes a seat, with Alex Call shifting to right field and Victor Robles returning to the lineup in his familiar center field position. Keibert Ruiz will catch and bat fifth after backup Riley Adams did a nice job in his place this afternoon, collecting two hits and throwing out a would-be basestealer.

WASHINGTON NATIONALS vs. PITTSBURGH PIRATES (Game 2)
Where: Nationals Park
Gametime: 6:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Cloudy, 69 degrees, wind 5 mph right field to left field

NATIONALS
RF Alex Call
2B Luis García
3B Jeimer Candelario
DH Joey Meneses
C Keibert Ruiz
1B Dominic Smith
LF Stone Garrett
SS CJ Abrams
CF Victor Robles

After a getaway night game in New York, the Nationals arrived back in Washington early Friday morning, then watched it rain pretty much nonstop all day and night. Here’s guessing they weren’t terribly disappointed to learn the opener of their series against the Pirates was postponed nearly four hours before scheduled first pitch.

The downside: The two teams will play a day-night doubleheader today, beginning with the originally scheduled 1:05 p.m. tilt. The Nats decided to keep Patrick Corbin on the mound for this one and hold Chad Kuhl for the 6:05 p.m. nightcap. The Pirates did the opposite, having Rich Hill (Friday night’s scheduled starter) take the opener, with Vince Velasquez pushed to the night game.

Corbin has delivered back-to-back quality starts, going six innings each time and allowing two earned runs (four total) to the Guardians and then three earned runs to the Twins. The left-hander has hardly been spectacular, but he’s at least giving his team a chance, which is all they can reasonably ask of him at this point.

Hill, meanwhile, remains an ageless wonder. The 43-year-old lefty sports a 2.12 ERA over his last three starts, continuing a stunning trend by the Pirates' unheralded rotation. That staff has delivered 14 quality starts over the last 16 games, and one of the starts that didn’t meet the qualification was Hill’s last outing, in which he allowed only one run over five innings. If you’re wondering how in the world Pittsburgh has stormed out to a National League-best 18-8 record, that’s how.

WASHINGTON NATIONALS vs. PITTSBURGH PIRATES (Game 1)
Where: Nationals Park
Gametime: 1:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Cloudy, 66 degrees, wind 4 mph in from center field

NEW YORK – Here we go again: For the second straight series, the Nationals have put themselves in position to earn their first three-game sweep since June 14-16, 2021, when they took three straight at home against the Pirates. It’s also the second straight series they’ll have this opportunity on the road, this time at Citi Field against the Mets, who entered this series only a half-game out of first place in the National League East. The Nats last swept a three-game road series Aug. 23-25, 2019 against the Cubs at Wrigley Field.

Trevor Williams will look to become the fourth straight Nats starting pitcher to turn in a quality start and fifth in the last six games. He’ll also be doing so while taking the mound at Citi Field for the first time since signing a two-year, $13 million contract with the Nats this offseason.

Williams is off to a strong start with his new team. He’s a respectable 1-1 with a 3.38 ERA and 1.078 WHIP over his first four starts, completing at least five innings each time out and allowing no more than three runs per start.

The Nationals offense will be tasked with facing their first left-hander of this series in Joey Lucchesi. The 29-year-old made his first major league start since recovering from Tommy John surgery last year on Friday in San Francisco, completing seven shutout innings and allowing just four hits and two walks while striking out nine in a win over the Giants.

Victor Robles is the only Nationals regular to have faced Lucchesi ahead of tonight, going 4-for-8 with a solo home run. Meanwhile, Dominic Smith gets a day off and Stone Garrett will DH against Lucchesi, moving Joey Meneses to first base. And Luis García takes tonight off, but it’s Michael Chavis playing second base instead of Jeter Downs.

DETROIT – The Orioles take their 16-8 record, second-best in the American League, to Comerica Park for the start of a four-game series, and they have Joey Ortiz making his major league debut at second base.

Ortiz, 24, was recalled this morning from Triple-A Norfolk, with infielder Terrin Vavra optioned. The fourth-round pick in 2019 out of New Mexico State is batting .359/.389/.500/.889 in 16 games with Norfolk, with five doubles, two triples and eight RBIs. He’s a plus-defender who plays shortstop, second base and third base.

Vavra also can play the outfield, and his removal from the Orioles roster seems to indicate that Austin Hays’ bruised right hand is improving. Hays is on the bench again tonight but he’s avoided the injured list.

The Tigers are starting three consecutive left-handers in the series, if the weather permits it: Joey Wentz, Eduardo Rodriguez and Matthew Boyd. Ortiz is a right-handed hitter.

Bringing up Ortiz also gives the Orioles some infield insurance after Jorge Mateo recently sat with a sore right hip and Gunnar Henderson appeared to hurt his right hand yesterday after diving for a line drive, though he stayed in the game.

NEW YORK – If it ain’t broke, don’t fix it.

Davey Martinez hasn’t really followed that motto through this season’s first 22 games, still tinkering with his lineup to find the right combination while also keeping matchups in mind on any given night.

The Nationals have used 20 different batting orders through the first month of the season. Early on, it was largely due to the high volume of opposing left-handed starters they faced, causing Martinez to switch around the order a lot.

The only time the manager has trotted out the same lineup for back-to-back games was on April 14-15 against the Guardians and on April 16 and 18 against the Guardians and Orioles, all four against opposing right-handed starters.

Tonight’s second game against the Mets will mark the third time the Nationals will trot out the same lineup for consecutive games, with Alex Call leading off, Luis García remaining in the second spot, Jeimer Candelario hitting third, Joey Meneses batting cleanup, and Keibert Ruiz, Dominic Smith, Lane Thomas, CJ Abrams and Victor Robles following.

NEW YORK – After Josiah Gray dominated the Mets lineup and finally got some much-needed run support for a win last night, MacKenzie Gore will take the mound at Citi Field tonight looking to repeat the feat.

Gore will face the Mets for the first time, with only tonight’s designated hitter Tommy Pham facing him before, hitting .400 in five at-bats. The left-hander is 2-1 with a 3.43 ERA over his first four starts with the Nats. Though he’s been solid with runs and strikeouts, Gore will look to limit his walks, having issued four free passes in three of his four outings.

The Nationals offense will face right-hander Kodai Senga in the regular season for the first time. Senga made one spring training start against the Nats in West Palm Beach on March 16, allowing one run on three hits with five strikeouts in three innings.

Signed to a five-year, $75 million contract out of Japan this offseason, Senga is known for throwing his “ghost forkball,” while also throwing a 95-96 mph fastball, cutter and slider. Though he has a 3-0 record and strong strikeout numbers, he too has struggled with walks and homers, giving up at least three free passes in each of his four outings and at least one home run in each of his last three.

WASHINGTON NATIONALS at NEW YORK METS
Where: Citi Field
Gametime: 7:10 p.m. EDT
TV: MASN2, MLB Network (out-of-market only), MLB.tv
Radio: 106.7 The Fan, MLB.com
Weather: Partly cloudy, 54 degrees, wind 11 mph out to left-center field

NEW YORK – The Nationals have arrived in the Big Apple for what is, oddly, just their second series against a division rival. The new schedule format implemented this season means they will face National League East opponents fewer times than in past years. This three-game set against the Mets will be their first against a division foe since the season-opening series against the Braves, and the first on the road.

Josiah Gray gets the ball to start tonight’s opener in a homecoming for the New Rochelle, N.Y. native. With a respectable 3.74 ERA over his first four starts, the right-hander will look to earn his first win after starting the season 0-4, due mainly to a lack of run support. The Nationals offense has been held scoreless in each of Gray’s last three starts and has only scored one run in any game he’s started, coming well after he departed his first start in the ninth inning on April 1 via a Keibert Ruiz solo home run.

Meanwhile, José Butto will fill Max Scherzer’s spot in the rotation to start the opener for the home side. The former Nationals and current Mets ace would have been on schedule to start tonight, but is instead serving a 10-game suspension following his ejection Thursday for having a foreign substance on his hand during a game.

Butto is a 25-year-old right-hander who is the Mets’ No. 15 prospect, per MLB Pipeline. In his season debut on April 16 in Oakland, he pitched five innings of one-run ball, but surrendered five hits and four walks while only striking out two.

WASHINGTON NATIONALS at NEW YORK METS
Where: Citi Field
Gametime: 7:10 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 The Fan, MLB.com
Weather: Partly cloudy, 56 degrees, wind 8 mph out to right field

Cedric Mullins returns to the leadoff spot tonight and Austin Hays is lowered to eighth, as the Orioles try to secure another series win.

Anthony Santander is the designated hitter and Adam Frazier is playing right field.

Kyle Bradish tossed six scoreless innings in D.C. after leaving the injured list. He made five starts against the Red Sox last year and went 0-3 with a 7.54 ERA and 1.500 WHIP in 22 2/3 innings.

Rafael Devers went 6-for-13 with a double. Alex Verdugo was 5-for-13 with two doubles.

The Orioles have won seven games in a row and 11 of 13. Their 15-7 record is second-best in the American League behind the Rays (20-3) and the third-best in the majors.

The Orioles will try to extend their winning streak to seven games tonight in the series opener against the Red Sox at Camden Yards.

They’ve won eight of their last nine games and 10 of 11.

Austin Hays is leading off and Cedric Mullins is batting seventh. James McCann is catching and Adley Rutschman is the designated hitter.

Adam Frazier is batting ninth and playing second base.

Dean Kremer will try to duplicate or build on his last start in D.C., when he tossed 6 2/3 scoreless innings with no walks and six strikeouts. His first 2023 start came at Fenway Park, where he allowed five runs and six hits with two home runs – from Alex Verdugo and Adam Duvall - over three innings.

MINNEAPOLIS – Do you remember the last time the Nationals swept a three-game series? Here are some hints: 1) Kyle Schwarber was their leadoff hitter, 2) Ryan Zimmerman was a pinch-hitter, 3) Brad Hand got the save. If you said June 16, 2021, when the Nats beat the Pirates to complete a three-game sweep in D.C., congratulations!

Yes, it’s been a long time, and a lot of things have changed around here. But today, these Nationals have an opportunity to finally accomplish that feat again if they can beat the Twins for the third straight day.

To do that, they’re going to need to keep their bats hot after Saturday’s 10-run explosion. The weather’s a little bit warmer today, if that helps at all. They’re facing another relatively unknown pitcher in Bailey Ober, a 27-year-old right-hander who was squeezed out of the Twins’ Opening Day rotation but was just called up from Triple-A St. Paul to make a spot start. He pitched well in the minors, and he’s got solid big league numbers as well (3.82 ERA, 1.146 WHIP in 31 career starts), but the Nats have never seen him before.

The Nationals also need Patrick Corbin to give them a chance, something that has too often proved too difficult a challenge for the left-hander. Corbin was better in his last start, though, holding the Guardians to two earned runs (four overall) in six innings, all of the damage coming in one inning. He’s had a full week of rest, so that could help as well.

WASHINGTON NATIONALS at MINNESOTA TWINS
Where: Target Field
Gametime: 1:10 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, MLB.com
Weather: Partly cloudy, 42 degrees, wind 9 mph out to right field

Jorge Mateo has returned to the lineup tonight as the Orioles try to extend their winning streak to five games. However, manager Brandon Hyde said he’s reconsidering because of the wet conditions.

Rain is falling at Camden Yards, but Hyde said, “As of now, we’re playing.”

Mateo is listed at shortstop and batting sixth. Austin Hays is leading off, with Cedric Mullins lowered again to ninth against Tigers left-hander Joey Wentz.

Adley Rutschman is the designated hitter. Ramón Urías is playing third base.

Kyle Gibson has a 4.18 ERA and 1.268 WHIP in four starts. He’s 10-11 with a 5.84 ERA and 1.577 WHIP in 25 career games (24 starts) against the Tigers.