Ryan Mountcastle remains out of the Orioles lineup tonight after leaving Wednesday’s game with discomfort in his left shoulder.

An MRI was negative and Mountcastle has progressed to taking some swings. Manager Brandon Hyde expressed his optimism again yesterday.

“It’s a lot better,” he said.

Heston Kjerstad’s first major league hit last night was a solo home run. He’s out of the lineup tonight.

Aaron Hicks is in right field and Anthony Santander is serving as the designated hitter. Austin Hays returns to the lineup in left field.

The Orioles and Rays are tied atop the American League East. The one win that the Orioles need to clinch the tiebreaker remains on hold, but their magic number to secure a playoff spot is three after the Rangers lost last night.

It’s complicated.

What’s apparent is a four-game losing streak that’s tied for the longest this season.

The Orioles also lost four in a row June 27-July 1 and won nine of their next 11, including a season-best eight-game winning streak.

Orioles batters are 6-for-59 in this series. They’ve scored six runs in the last four games.

Jordan Westburg usually wouldn’t feel a smile creasing his face after his manager removed him for a pinch-hitter. His competitive side makes it hard to accept sitting, and definitely not with a grin, whether at the beginning or in the later innings. He wants the bat in his hands. He wants a challenge, and the chance to impact a game.

There are exceptions, though, like Thursday night at Camden Yards.

Westburg was supposed to lead off the bottom of the eighth against Rays reliever Robert Stephenson, but Brandon Hyde sent up Heston Kjerstad for his major league debut. The crowd roared when he stepped out of the dugout.

There was a more reserved but approving reaction inside of it.

Westburg knew the struggles that Kjerstad endured to reach this moment. The diagnosis of myocarditis, and later a strained hamstring. More than one setback. Questions about his professional future. Worries about his long-term health.

The same organization that preaches the importance of never looking too far ahead happily spun its attention to the past before tonight’s game against the Rays.

The division race came with a pause button.

To honor Adam Jones on his official retirement after signing a one-day contract, the Orioles brought back former teammates who have experienced postseason baseball. Fan favorites from previous years.

An emotional distraction before the 2023 Orioles were stung by reality again.

The division lead is down to two percentage points. The losing streak has reached four games to match a season high. The reunion was special, but they need a reset.

Ryan Mountcastle’s health is trending in the right direction, and he could be nearing a return to the Orioles lineup.

Mountcastle exited Wednesday’s game with left shoulder discomfort but didn’t go on the injured list. He’s out of the lineup again tonight.

“Feeling even better today,” said manager Brandon Hyde. “He’s going to take some swings here coming up, so hopefully he’s available, but it’s a lot better.”

Ryan O’Hearn is playing first base again tonight and Heston Kjerstad is making his first major league start as the designated hitter.

Closer Félix Bautista also has avoided the injured list after suffering a slight tear in the ulnar collateral ligament in his right elbow exactly three weeks ago.

The pressure is building on the Orioles to hold onto their division lead, which is down to one game after last night’s 4-3 loss to the Rays.

Both teams have 91 wins. Tampa Bay has lost two more games.

The Orioles have lost three in a row, their longest streak since dropping four straight June 27-July 1.

Heston Kjerstad is making his first major league start, serving as designated hitter.

Ryan Mountcastle remains out of the lineup.

Orioles' right-hander Kyle Bradish was asked last night for his opinion on how he pitched.

“Indifferent,” was his immediate response.

Couldn’t feel that way about everything that happened prior to the game.

The anticipation over Ryan Mountcastle’s MRI results. The predicted roster move that turned into multiple moves and caught many of us by surprise. The observations and lessons learned.

Don’t always trust body language and somber tones.

Orioles manager Brandon Hyde faced redundancy before the Rays.

More questions about the magnitude of the series. How his players would handle it, how he’d handle it.

“I just want our guys to enjoy it,” Hyde said during his daily media session. “This is what you play for all year. Play meaningful games in September. It’s something you always talk about.

“I really want our guys to just relax and enjoy all the moments.”

The fun times began with Cedric Mullins’ running, diving catch in right-center field to rob Taylor Walls in the second inning and likely save a run. They accelerated with Ryan O’Hearn’s leadoff homer in the bottom half and Gunnar Henderson’s 26^th in the fourth.

The grimacing from Orioles' first baseman Ryan Mountcastle last night, followed by his removal from the game and somber tone at his locker, hinted at a serious injury to his left shoulder. He felt and heard a pop. The pain wouldn’t subside. He fidgeted at first base. Bad body language for anyone who can interpret.

The mood within the organization has taken a drastic turn. Smiles and signs of relief.

Manager Brandon Hyde said the Orioles received “great news” on Mountcastle’s MRI this morning. An expected trip to the injured list was scrubbed.

“He’s feeling a lot better,” Hyde said. “The imaging was all positive, so he’s just day-to-day-right now.”

Mountcastle has left shoulder soreness, but it didn’t remove him from the active roster.

Stoked. Excited. Relieved.

Heston Kjerstad summed up his emotions after getting the news last night that the Orioles wanted him in Baltimore. He isn’t in tonight’s lineup, but he reached the majors in his first full professional season.

The wheels were in motion after Ryan Mountcastle injured his left shoulder while fouling off a pitch. Triple-A Norfolk manager Buck Britton pulled Kjerstad from the game after two plate appearances.

“For precautionary or whatever,” Kjerstad said, “and then postgame Buck let me know that I was getting called up.”

Kjerstad called his parents, Dave and Jody, and his siblings. They'll be part of his cheering section tonight at Camden Yards.

The Orioles must proceed through their important four-game series and the ensuing days without their closer and, for now, their starting first baseman. But how long?

Félix Bautista is on the injured list with a slight tear of his ulnar collateral ligament – he’s playing catch on flat ground while the team determines whether he can pitch again this year - but Ryan Mountcastle didn’t join him today.

Mountcastle injured his left shoulder last night and underwent an MRI, but outfielder Heston Kjerstad, the second-overall pick in the 2022 draft and one of the top prospects in baseball, had his contract selected from Triple-A Norfolk and Ryan McKenna was optioned. Mountcastle stays on the active roster and perhaps retains his day-to-day status.

Infielder Terrin Vavra was recalled from Norfolk and transferred to the 60-day injured list to make room for Kjerstad on the 40-man roster. Vavra has a shoulder strain and receives his major league salary and service time.

Also, reliever Bryan Baker was recalled from Norfolk and left-hander Nick Vespi was optioned for a fifth time. Vespi can’t be optioned again without passing through waivers.

Now, it gets real.

Or real important. And really hard.

The other games counted, of course, but the Orioles are set to play four against the Rays beginning tonight at Camden Yards. The team that’s two behind them in the division race. The team with the same lengthy stubborn streak, refusing to let injuries and other impactful issues break its spirit and damage postseason aspirations.

The Orioles returned to their clubhouse last night with their magic number at four to clinch the first playoff birth since 2016. That’s the immediate task, and it could be done in a few days.

An Orioles win reduces the number by one. And so on. That’s the simplest math in an otherwise complicated equation, which induces headaches when also factoring in other teams like the Rangers and Mariners.

The Orioles didn’t send down left-hander Cole Irvin again today based on poor evaluations of his performance. Circumstances beyond his control removed him from the active roster and the clubhouse.

Irvin was optioned to Triple-A Norfolk, with Nick Vespi recalled again.

“Because of the six-man rotation right now, as well as, the last four or five starts have been short, so our bullpen has taken a heavy load, that whole Boston series and the first game here against St. Louis,” manager Brandon Hyde said. “We just felt like we needed a bullpen arm.”

Irvin has been optioned three times. He could return again but must stay in the minors for a minimum of 15 days unless replacing an injured player.

“We’ll see,” Hyde said.

Nick Vespi is back in the majors.

The Orioles recalled Vespi this morning from Triple-A Norfolk and optioned Cole Irvin in a swap of left-handed relievers.

Irvin was removed from the rotation to create a spot for John Means. He tossed two scoreless innings last night and threw 32 pitches, pushing back his availability with the second-place Rays coming to town Thursday to begin a crucial four-game series.

This is Irvin’s third time being optioned this season. Vespi is a real pro.

The Orioles optioned Vespi for a fourth time on Aug. 24. He can be sent down one more time without the Orioles having to expose him to waivers.

The morning of April 13, 2022, began in normal fashion, with a phone call to wish my mother a Happy Birthday and probably a few complaints about anything to anyone within earshot. Staying on brand. The Orioles were hosting the Brewers after losing four of their first five games. The announced crowd was 12,704.

John Means was making his second start, with none of us knowing it would be his last until Sept. 12, 2023 – when I turned 60 years old.

What is it about birthdays in my family?

Anthony Bemboom caught Means, with starter Robinson Chirinos entering late after Ryan McKenna pinch-ran. Adley Rutschman wouldn’t arrive for a month.

Rougned Odor played second base and Kelvin Gutiérrez pinch-hit for him. Gunnar Henderson wouldn’t debut until Aug. 31. Jordan Westburg didn’t play his first major league game until June 26, 2023.

John Means came out of the dugout first tonight, the honor bestowed upon the starter, the one-time ace. The September addition who hadn’t pitched since April 13, 2022.

Means received a loud ovation during introductions, with many fans standing to cheer him. It happened again after he reached the mound and heard his name on the public address system.

The enthusiasm over his return wouldn’t die. Paul Goldschmidt’s two-out home run in the first inning only impacted the score.

Means also surrendered a bases-empty, two-strike homer to Towson University’s Richie Palacios in the fourth in a 5-2 loss to the Cardinals before an announced crowd of 15,526 at Camden Yards. He allowed three runs and four hits in five innings, with no walks and one strikeout.

He’s back. That’s a win for the 91-53 Orioles, who remain three games ahead of the Rays, that might impact the division race on another night.

Drew Rom thought he made it past the trade deadline.

The Orioles’ pitching prospect was in Charlotte with Triple-A Norfolk. Manager Buck Britton approached him. And his baseball life was about to change.

“Was not expecting it at all,” Rom said. “It was literally a minute or two before the trade deadline and Buck walks in and says, ‘Hey Rom, I need to see you in the office real fast.’ I’m like, ‘Oh Lord, here we go.’”

Rom, a Kentucky native, was going to the Cardinals organization with infielder César Prieto and pitcher Zack Showalter for veteran starter Jack Flaherty. He’s starting Wednesday night’s series finale against the Orioles.

“The ball got rolling and next thing I know, I’m in Memphis, and then two weeks later I’m up here in the big leagues with the Cardinals making my debut,” he said. “And then I get to check two things off my check list with playing in Cincinnati and debuting, and the third, playing against the Orioles in Camden.”

The Orioles reinstated John Means from the 60-day injured list today and optioned reliever Joey Krehbiel to Triple-A Norfolk. The 40-man roster is full.

Krehbiel has made six appearances with the Orioles and allowed one run and two hits with five strikeouts in five innings.

Means makes his first start tonight since April 13, 2022. He’s never faced the Cardinals, but the opponent doesn’t matter.

Means is back on the mound and that’s the story.

The magic number is four to clinch a playoff berth. The Orioles are on pace to win 103 games.

Nineteen games remain for the Orioles, but it feels like the first time for John Means.

The left-hander gets back on the mound tonight, finally past his Tommy John surgery and pulled muscle in his upper back and the litany of questions about his recoveries and status. He doesn’t need to say that he’s fine starting or relieving or attempt a guess at his return date.

Means wants to start. He’s a team player and will go along with the program, but yes, he definitely wants to be in the rotation. And the return date is Sept 12, 2023.

The ovation for Means could bring down the center field roof deck bar. Windows could shatter in the warehouse. Jack Flaherty could smile.

(I kid. He’s a serious guy. It’s OK.)

BOSTON – Ryan O’Hearn wouldn’t get lured out of his baseball comfort zone. The dangling carrot was swatted like a pesky fly. Or a grooved fastball that wraps around the Pesky Pole.

Asked about the significance of the Orioles winning the division and leaving wild card aspirations in the dust, O’Hearn was willing to confirm that the American League East title is “very important.” But don’t press it.

“To me, the No. 1 goal is to make the playoffs, but you’re not going to get me to predict the future or get too far ahead of ourselves,” he said, smiling.

“We focus on every day, same thing we’ve been saying. One game at a time, trying to win a ballgame, and that’s it. If we do that, that’ll take us where we want to go.”

Trust the process, a slogan the Orioles can carry from rebuild to contender. It doesn’t get stale.