MIAMI — The Orioles will lean on a right-handed pitcher making his major league debut in the second game of a series against the Marlins. Chayce McDermott will start Wednesday for Baltimore after joining the club in Miami as a member of the taxi squad Tuesday, manager Brandon Hyde said.

The Orioles had briefly used a four-man rotation because days off have enabled their starters to pitch on regular rest. But Hyde added that Baltimore will attempt to give right-handers Corbin Burnes and Grayson Rodriguez an extra day of rest.

“At least for the next month or so, we’re going to try to give those guys an extra day when possible,” Hyde said.

To make room for McDermott on the 40-man roster, the Orioles designated right-hander Jonathan Heasley for assignment. And, to make room for McDermott on the 26-man active roster, right-hander Bryan Baker was optioned to Triple-A Norfolk.

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The Orioles announced Burnes will pitch Thursday’s finale against the Marlins rather remaining on a five-day routine. That would seemingly push Rodriguez to Friday’s opener at Camden Yards against the San Diego Padres. The two hurlers, who make up the top of Baltimore’s rotation, opened the second half of the season with wins against the Texas Rangers over the weekend.

McDermott, Baltimore’s sixth-best prospect, per Baseball America, holds a 3.96 ERA with Norfolk this season with a 1.43 WHIP. McDermott, like many young pitchers, can struggle with command. He averages 5.3 walks per nine innings, but the Ball State University product also brings swing-and-miss potential with a fastball that reaches the high 90s and a slider that has ample sweep to it.

With those offerings at his disposal, McDermott averages 12.8 strikeouts per nine innings for the Tides.

“He’s had some really good moments in Triple-A this year,” Hyde said. “He’s had a little bit of a rocky road. His last time out wasn’t his best, but the stuff is there. It’s all about the strike-throwing ability. And he’s going to get his chance sometime soon.”

There’s precedent this season for the Orioles using the taxi squad ahead of a debut.

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Baltimore put left-hander Cade Povich on the taxi squad in Toronto and activated him for his debut June 6. Povich was optioned shortly before the All-Star break, yet Hyde said he didn’t think he would remain in Triple-A long. Povich isn’t eligible to be recalled because he hasn’t spent 15 days in the minors and he isn’t replacing an injured player.

With season-ending injuries to right-handers Tyler Wells and Kyle Bradish and left-hander John Means, the Orioles are in need of rotation help. The trade deadline is July 30, and Baltimore is expected to be active in talks. But Povich and McDermott are candidates to help the rotation this season and beyond.

Povich posted mixed results across seven starts. He allowed eight runs in one inning against the Oakland Athletics but also held the Atlanta Braves scoreless in six innings.

McDermott is the next up to show what he can do.