The Astros claimed reliever Kaleb Ort on waivers from the Orioles earlier today. The Orioles’ 40-man roster is down to 39 players.

Ort had a 12.08 ERA and 2.447 WHIP in 14 relief appearances with Triple-A Norfolk. The Orioles acquired him from the Phillies on Feb. 19 for cash considerations.

Ryan O’Hearn is the first baseman tonight as the series continues against the Red Sox. Ryan Mountcastle is on the bench.

Cedric Mullins is in center field again after yesterday’s two-run triple. Colton Cowser is in left field and batting cleanup. Kyle Stowers is the designated hitter after going 3-for-4 yesterday with a career-high four RBIs.

Jorge Mateo stays at second base. Fifteen of his 25 hits have gone for extra bases.

ATLANTA – After a stretch of offensive woes, the Nationals got some decent production at the plate over the weekend. They scored a combined 14 runs while taking two of three from the Mariners, missing a chance to sweep the series on Sunday. They’ll hope their bats stay hot in Atlanta as they begin a seven-game road trip.

Isn’t it crazy that it’s Memorial Day and this is the first time the Nats will face the Braves this season? 

Some reinforcements came south with them. Lane Thomas was activated off the 10-day injured list after recovering from his left MCL sprain and playing in four rehab games with Double-A Harrisburg. But that means someone has to come off the active roster, so in a corresponding move, the Nats designated Victor Robles for assignment, seemingly ending his 11-year tenure with the organization. More on that decision coming soon.

The Nats will send Mitchell Parker to the mound for his eighth start. Manager Davey Martinez used Thursday’s off-day to switch up the rotation to give guys some extra rest, so the rookie left-hander will be pitching on two extra days’ rest. He’s 3-2 with a 3.32 ERA and 1.158 WHIP after holding the Twins to three runs over six innings with seven strikeouts last week.

Parker will face a Braves lineup without the reigning National League MVP. Ronald Acuña Jr. tore his left ACL yesterday against the Pirates and the team announced last night he will miss the remainder of the year. Acuña also missed significant time in 2021 when he tore his right ACL.

The Orioles have made it home after their 4-3 road trip to St. Louis and Chicago and now they begin a stretch of four straight series versus American League East opponents.

The Orioles (33-18), two games out in the division behind New York, host Boston (27-26), a club that is in third place but is nine games out. Today these teams start a three-game series and run of 14 games for the Orioles against Boston, Tampa Bay, Toronto and Tampa Bay.

After scoring just eight runs on 14 hits in three losses at St. Louis, the O's got more productive offense during the four-game sweep at Chicago. They scored 23 runs on 35 hits with eight doubles and eight homers in that series. They went 7-for-25 with runners in scoring position in winning the games by two, two, two and three runs.

Boston won Sunday to avoid being swept at home by Milwaukee. With that 2-1 win, Boston is an major league-best 9-0 on Sundays, by a combined 58-20 score. 

The Orioles swept Boston April 9-11 at Fenway Park, winning by 7-1, 7-5 and 9-4 scores. Baltimore is 39-22 (.639) in the AL East since the start of last year.

Just about everything that could go right for the Nationals on Friday night did go right. MacKenzie Gore tossed seven innings of one-run ball. Luis García Jr., Keibert Ruiz and Eddie Rosario all hit homers. Hunter Harvey and Dylan Floro each tossed a scoreless inning of relief. And the Nats cruised to an easy 6-1 victory over the Mariners.

Now, can they do it again and actually build some positive momentum for the first time in a couple weeks?

Davey Martinez would love to keep the offense going like this against Logan Gilbert. The right-hander faced the Nationals last summer in Seattle and gave up four runs in six innings. García, Ruiz, Ildemaro Vargas and Riley Adams were all in the lineup that afternoon.

Trevor Williams also pitched in that series, also struggling. The right-hander allowed three runs on eight hits in only four innings, throwing a whopping 83 pitches in the process. Williams, of course, has been a very different pitcher this season, so he will hope to look more like that version of himself this afternoon.

WASHINGTON NATIONALS vs. SEATTLE MARINERS
Where: Nationals Park
Gametime: 4:05 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Partly cloudy, 86 degrees, wind 9 mph out to left field

The Nationals need to break out of this offensive slump in the worst way. Despite scoring 12 runs in a blowout win over the Twins on Monday, they have scored two or fewer runs in seven of their last 11 games, losing nine overall. They have scored the second-fewest runs in the National League this season (Cardinals) and are in the lower third of the league with a .237 average with runners in scoring position.

The Nats will try again to get going tonight against Mariners starter George Kirby, who has been a mixed bag to start the year. While the young right-hander has four shutout starts, he also has four outings with four or more earned runs charged to his line, leading to an ERA of 3.99.

The offensive woes are especially frustrating since the Nats have received some solid pitching performances that have gone to waste lately: The pitching staff has given up four or fewer runs in nine of the last 11 games. MacKenzie Gore will look to continue that trend on the mound in his 10th turn in the rotation while coming off back-to-back quality starts for the first time this year.

WASHINGTON NATIONALS vs. SEATTLE MARINERS
Where: Nationals Park
Gametime: 6:45 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 The Fan, DC 87.7 (Spanish), MLB.com
Weather: Partly cloudy, 83 degrees, wind 5 mph from right to left field

NATIONALS
SS CJ Abrams
RF Eddie Rosario
DH Joey Meneses
2B Luis García Jr. 
LF Jesse Winker
C Keibert Ruiz
3B Nick Senzel
1B Joey Gallo 
CF Jacob Young

CHICAGO – Jordan Westburg is batting fifth tonight and playing third base in the series opener in Chicago.

Colton Cowser is in left field, Cedric Mullins is in center and Anthony Santander is in right.

Ryan Mountcastle is the first baseman, with Ryan O’Hearn serving as designated hitter.

Adley Rutschman leads the Orioles with 56 hits. He joins Milwaukee’s William Contreras (65) as the only catchers ranking first on their teams.

Grayson Rodriguez has a streak of 12 straight scoreless innings, third-longest by an Orioles starter behind Cole Irvin’s 22 2/3 and Albert Suárez’s 12 1/3.

The Orioles completed their suspended game today with a 3-1 loss to the Cardinals, setting up this afternoon’s series finale before the charter flight to Chicago.

A win is needed to prevent the sweepless streak in the regular season from ending at 106 series.

Nolan Gorman hit a two-run homer off Keegan Akin in the sixth inning to break a 1-1 tie. Akin inherited a runner from Jacob Webb.

Ryan Mountcastle singled today to interrupt a 1-for-26 slump. He’s on the bench for the second game.

Left-hander Nick Vespi was added as the 27^th man. The Cardinals added right-hander Chris Roycroft.

You couldn’t draw up more extreme polar opposites for the first two games of a series than what we just experienced. The Nationals blew out the Twins on Monday night, 12-3. Then the Twins blew out the Nationals on Tuesday night, 10-0. So who knows what to expect in today’s matinee finale?

The Nats have to get a better start from Jake Irvin than they got from Patrick Corbin. Irvin, native of Bloomington, Minn., will be plenty motivated facing his hometown team. He’s coming off a bit of a rough outing in Philadelphia, where he gave up four runs in five innings against a very good lineup. He’ll try to provide some more length this afternoon.

Simeon Woods Richardson, today’s Minnesota starter, has been very good, entering this one with a 2.97 ERA and a 25-to-6 strikeout-to-walk ratio. But the right-hander made only one big league appearance last year, and it happened to come against the Nationals. Who roughed him up for five runs and seven hits in 4 2/3 innings.

WASHINGTON NATIONALS vs. MINNESOTA TWINS
Where: Nationals Park
Gametime: 1:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Partly cloudy, 85 degrees, wind 10 mph out to left field

NATIONALS
SS CJ Abrams
RF Eddie Rosario
LF Jesse Winker
DH Joey Meneses
2B Luis García Jr.
3B Ildemaro Vargas
1B Joey Gallo
C Riley Adams
CF Jacob Young

Ryan Mountcastle is in tonight’s lineup at first base, as the Orioles try to even their series in St. Louis.

Mountcastle came off the bench last night. He hadn’t been in the lineup for two of the last three games.

Kyle Stowers is in right field. Ryan O’Hearn is the designated hitter.

Anthony Santander, playing with a bruised left knee, is on the bench.

Jordan Westburg is batting cleanup again.

The Nationals ended their losing streak and extended the Twins’ losing streak with a blowout win Monday night. Now they’ll look to make it two in a row and generate some positive momentum for the first time in a couple weeks.

They’ll hand the ball tonight to Patrick Corbin, who has quietly strung together some solid starts. In five outings since April 23, he’s 1-1 with a 3.46 ERA, limiting damage while surrendering only one home run. He’ll look to keep that up against a Twins club that has scored only 12 runs during its seven-game losing streak.

The Nats lineup finally busted out Monday for 12 runs, scoring thanks to a combination of home runs, clutch hitting and aggressive baserunning. They really are at their best when they can do all three things, and they’ll try to do it again tonight against Joe Ryan, Minnesota’s 27-year-old right-hander who has been quite good with a 1.019 WHIP and 58 strikeouts to only seven walks.

WASHINGTON NATIONALS vs. MINNESOTA TWINS
Where: Nationals Park
Gametime: 6:45 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Partly cloudy, 80 degrees, wind 9 mph out to left field

NATIONALS
SS CJ Abrams
RF Eddie Rosario
LF Jesse Winker
DH Joey Meneses
2B Luis García Jr.
3B Nick Senzel
1B Joey Gallo
C Keibert Ruiz
CF Jacob Young

Ryan Mountcastle is out of the Orioles lineup again tonight to begin a three-game series in St. Louis.

Mountcastle sat out Saturday's game and played first base yesterday. He had two doubles and a triple on May 11 but has one hit in his last 20 at-bats. He hasn’t drawn a walk since April 24.

Anthony Santander, who’s receiving treatment on a bruised and swollen left knee, is the designated hitter.

Jordan Westburg is batting cleanup for the second time in his career.

Cedric Mullins is in center field. Mullins stole his 100^th career base yesterday and needs three more to tie Corey Patterson for eighth in club history.

The Nationals’ schedule has been pretty wonky to begin this season. They’ve played 28 road games, only 17 home games. They’ve played 20 interleague games, only 10 intradivision games. The good news: They’re back home after a tough, 2-7 road trip. But they’re back to facing American League teams all week, with the Twins here for three and then the Mariners coming to town this weekend.

A Nats lineup that did sort of break out for five runs Sunday in Philadelphia (only three of those runs coming early, when the game was still close) will see a sort of familiar face tonight in Pablo López. The former Marlins right-hander is in his second season in Minnesota and comes into this start with a 4-3 record and 3.93 ERA. The Nats faced López on a cold night at Target Field last year and got to him for five runs in four innings.

The Twins will be seeing Mitchell Parker for the first time. The rookie left-hander continues to exceed expectations in his first month-plus in the big leagues, and he still hasn’t allowed more than three runs in a start up here. He’ll try to hold down a Twins lineup that ranks in the middle of the pack in the AL so far in most offensive categories.

WASHINGTON NATIONALS vs. MINNESOTA TWINS
Where: Nationals Park
Gametime: 6:45 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Partly cloudy, 76 degrees, wind 6 mph right field to left field

NATIONALS
SS CJ Abrams
RF Eddie Rosario
LF Jesse Winker
DH Joey Meneses
2B Luis García Jr.
3B Nick Senzel
1B Joey Gallo
C Keibert Ruiz
CF Jacob Young

Adley Rutschman gets a rare day off this afternoon as the Orioles conclude their series against the Mariners at Camden Yards. They also have reached the end of their three-opponent homestand.

Ryan O’Hearn is the designated hitter. Colton Cowser is in right field while Anthony Santander receives treatment on a bruised left knee.

Austin Hays stays in the lineup in left field. Jordan Westburg is batting second for the first time in his career.

Ryan Mountcastle returns to the lineup. He hasn’t drawn a walk this month.

Corbin Burnes is working on an extra day of rest. He has a 2.68 ERA and 1.006 WHIP in nine games despite averaging 8.2 strikeouts per nine innings, the lowest of his career.

PHILADELPHIA – A difficult road trip comes to an end this afternoon for the Nationals, who lost two of three in Boston, then two of three in Chicago and now have to win today just to avoid getting swept by the Phillies. The crazy part of it all: They’ve lost five of these six games by either one or two runs. The combined score on this road trip is 25-20 for the opponents, despite the lopsided record.

But today’s a new day, and maybe the Nats will finally score enough runs to win a game. They’ve had no trouble giving themselves chances (they currently rank sixth in the majors in plate appearances with runners in scoring position!), but they’ve had all kinds of trouble converting those chances (they rank 23rd in RBIs in those situations).

Trevor Williams will look to continue his wildly impressive start to the season, hoping to keep this daunting Phillies lineup in check. Williams finally surrendered his first homer of the year last time out in Chicago. Can he keep Kyle Schwarber, Bryce Harper and Co. inside Citizens Bank Park this afternoon? The fate of the Nationals may rest on that challenge.

WASHINGTON NATIONALS at PHILADELPHIA PHILLIES
Where: Citizens Bank Park
Gametime: 1:35 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Partly cloudy, 72 degrees, wind 8 mph in from right field

NATIONALS
SS CJ Abrams
2B Ildemaro Vargas
RF Eddie Rosario
DH Luis García Jr.
3B Nick Senzel
1B Joey Gallo
C Keibert Ruiz
LF Jesse Winker
CF Jacob Young

PHILADELPHIA – It’s a gray, rainy Saturday here in the City of Brotherly Love, which wasn’t very kind to the Nationals on Friday night. The Nats lost their third straight, this one by the count of 4-2 to the Phillies, the only two runs they’ve scored since Tuesday in Chicago. Maybe the rain is just what they need to break out of their funk?

With left-hander Cristopher Sánchez on the mound for Philadelphia, Davey Martinez has a mostly right-handed lineup, certainly in the prominent spots. That includes a 2-3-4-5 of Ildemaro Vargas, Joey Meneses, Nick Senzel and Riley Adams. Joey Gallo and Jesse Winker are still starting, but they’re both down in the lineup. Luis García Jr., who was scratched Friday with a right heel injury, isn’t in the lineup again tonight, though I would imagine we could see him come off the bench later to face a right-handed reliever.

MacKenzie Gore, another lefty, starts for the Nationals, and it will be his task to hold down the Phillies lineup as best as possible. Gore did defeat them earlier this season, allowing two runs over 5 2/3 innings. He’s made eight starts now, and he has yet to be charged with more than three earned runs in any of them. And yet he hasn’t earned a win since April 13 in Oakland, a long stretch in spite of his quality performances.

WASHINGTON NATIONALS at PHILADELPHIA PHILLIES
Where: Citizens Bank Park
Gametime: 6:05 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Rain ending, 67 degrees, wind 5 mph out to left field

NATIONALS
SS CJ Abrams
2B Ildemaro Vargas
DH Joey Meneses
3B Nick Senzel
C Riley Adams
1B Joey Gallo
RF Victor Robles
LF Jesse Winker
CF Jacob Young

PHILADELPHIA – They lost two of three in Boston. Then they lost two of three in Chicago. How will the Nationals fare the next three days in Philadelphia, home of a team with a 30-14 record?

It’s going to be a challenge, especially for a Nats lineup that was shut out twice by the White Sox and is really struggling to score runs right now. That group does have one power hitter back for the first time in three weeks, though: Joey Gallo. Gallo has officially been activated off the 10-day injured list. The corresponding move: Trey Lipscomb was optioned to Triple-A Rochester. Gallo and Co. will hope to make some loud contact tonight against the always-tough Zack Wheeler.

Jake Irvin gets the ball for the Nationals, looking to hold a dangerous Phillies lineup in check. Trea Turner is currently on the IL, but the rest of their regulars are healthy and productive, including Bryce Harper. The Nats will need Irvin’s best tonight, given their own offensive woes.

Luis García Jr. was removed from tonight's lineup and is replaced by Ildemaro Vargas. He'll bat fifth behind Gallo, who was moved up to the clean-up spot. 

WASHINGTON NATIONALS at PHILADELPHIA PHILLIES
Where: Citizens Bank Park
Gametime: 6:40 p.m. EDT
TV: MASN, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Mostly cloudy, 70 degrees, wind 6 mph out to left field

CHICAGO – The Nationals are playing decent baseball right now. They’re not, however, playing winning baseball. Since reaching the .500 mark on April 29 thanks to their sweep in Miami, they’ve gone 6-7. They’ve lost two in a row only once in that time, but they’ve also won two in a row only once. Every bit of positive momentum is halted by a subsequent loss.

Not that a win today would make that much difference, but it would at least give the Nats a series win over a White Sox club that admittedly has played better of late but still owns a wretched 13-30 record overall.

It would be especially nice if the Nationals could score some runs. And not just with one rally, but multiple rallies over multiple innings. During the aforementioned 13-game stretch they’re on, they’ve scored an average of 3.8 runs. And that includes the two breakouts against the Blue Jays, when they scored nine and 11 runs. More is needed today against left-hander Garrett Crochet, who has a 4.63 ERA but leads the league with 64 strikeouts.

Patrick Corbin gets the nod for the Nats, and though his season numbers (5.91 ERA) still don’t look good, he has been markedly better in recent outings (3.54 ERA his last four starts). The bullpen, thankfully, didn’t get overworked during Tuesday’s doubleheader. And with an off-day Thursday before the road trip continues in Philadelphia, Davey Martinez should have everyone at his disposal once Corbin departs.

WASHINGTON NATIONALS at CHICAGO WHITE SOX
Where: Guaranteed Rate Field
Gametime: 2:10 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Sunny, 59 degrees, wind 14 mph out to right field

The Orioles will try again today to squeeze in a game against the Blue Jays despite more rain in the forecast.

Jordan Westburg is leading off for the first time in his major league career. Gunnar Henderson moves to the cleanup spot for the 11^th time.

Kyle Bradish makes his third start after allowing two runs and striking out 14 batters in 9 2/3 innings following his reinstatement from the injured list. He’s made seven career starts against the Blue Jays and registered a 5.25 ERA and 1.417 WHIP in 36 innings.

Orioles starters have gone an average of 5.7 innings per start, fifth-highest in the majors, per STATS. The Blue Jays are 14^th at 5.3.

George Springer is 7-for-17 with four doubles and a home run against Bradish. Bo Bichette is 5-for-15 with two homers, Vladimir Guerrero Jr. is 5-for-17 with a homer, and Alejandro Kirk is 5-for-10 with a double.

CHICAGO – And we’re on to Game 2 of today’s straight doubleheader, the Nationals and White Sox wrapping up a long afternoon and evening on the South Side. This one features an interesting pitching matchup.

Erick Fedde, the former first-round pick of the Nats way back in 2014 who never put it all together in six seasons with them, makes the start for the White Sox. After a year spent in South Korea, where he won the league MVP award, Fedde signed a two-year, $15 million with Chicago and has proceeded to go 3-0 with a 3.00 ERA in eight starts for his new club.

Mitchell Parker, meanwhile, makes his sixth career start tonight, seeking his first win since start No. 2 when he shut out the Astros over seven innings. The rookie left-hander has pitched well since then, he just hasn’t benefited from a lot of run support. (He’s not alone in that department.)

WASHINGTON NATIONALS at CHICAGO WHITE SOX (GAME 2)
Where: Guaranteed Rate Field
Gametime: 7:50 p.m. EDT (Approx.)
TV: MASN2, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Chance of rain, 55 degrees, wind 17 mph out to right field

NATIONALS
SS CJ Abrams
3B Trey Lipscomb
RF Eddie Rosario
1B Joey Meneses
2B Luis García Jr.
C Keibert Ruiz
DH Jesse Winker
LF Ildemaro Vargas
CF Jacob Young

CHICAGO – Alright, let’s give this another try. After Monday’s series opener at Guaranteed Rate Field was rained out, the Nationals and White Sox will play two today. And it’s an old-school, traditional, single-admission doubleheader. Game 1 starts at 4:40 p.m. Eastern, with Game 2 set to start approximately 30 minutes after the conclusion of the opener. If everything goes smoothly, we should wrap up around the same time as we would’ve all along. (Wishful thinking, obviously.)

Both teams are sticking with their pitching plan, so it’ll be Trevor Williams vs. Chris Flexen in the opener as was planned from the outset. Mitchell Parker faces former National Erick Fedde in the nightcap.

Both teams also get to call up a 27th man for the day, and the Nats chose to go with Jackson Rutledge. The right-hander’s season has gotten off to a rough start at Triple-A Rochester (6.67 ERA, 1.630 WHIP in seven games), and he just threw 91 pitches three days ago in Scranton. But he’s only here in case the team needs a few innings of relief in either game. In a perfect world, he won’t be needed and he’ll head back to Triple-A and prepare for his next start.

WASHINGTON NATIONALS at CHICAGO WHITE SOX (GAME 1)
Where: Guaranteed Rate Field
Gametime: 4:40 p.m. EDT
TV: MASN2, MLB.tv
Radio: 106.7 FM, 88.7 FM (Spanish), MLB.com
Weather: Cloudy, 57 degrees, wind 16 mph out to right field

NATIONALS
SS CJ Abrams
CF Jacob Young
LF Eddie Rosario
1B Joey Meneses
2B Luis García Jr.
DH Nick Senzel
C Riley Adams
3B Trey Lipscomb
RF Victor Robles