DETROIT — The Orioles have been waiting for the day their first round of injured players were ready to rejoin the team.

They’ve been counting on these reinforcements since July, as the injured list steadily grew and the team played below .500 baseball as a result. On Sunday, as the Orioles prepared to face the Tigers in the series finale, they got their first set of healthy players back, when outfielder Heston Kjerstad and right-handed reliever Jacob Webb were activated. Nick Maton and Cole Irvin were designated for assignment in the corresponding moves.

Left-handed reliever Danny Coulombe, on a rehab assignment with Triple-A Norfolk, is on his way back as well, as are infielders Ramón Urías and Jordan Westburg, who are both doing baseball activities. The team is also holding on to hope that right-handed starter Grayson Rodriguez and infielder Ryan Mountcastle could return this season, but their timelines are unclear.

Kjerstad was hit by a 97 mph sinker on July 12 and went on the concussion list the next day. He was activated seven days later, but he still didn’t feel right. He knew he wasn’t 100%, but he chalked it up to being out of sync because he wasn’t playing every day, even though he was still having headaches, trouble balancing and sensitivity to screens.

Kjerstad was placed on the injured list Aug. 1 and sent to a specialist. He started concussion physical therapy, working on his vestibular system by doing balancing exercises and eye tracking.

“It wasn’t enjoyable, that’s for sure,” Kjerstad said. “For one, I always want to be healthy. Two, I hate missing playing games. That’s all I want to do is play baseball, so anytime I’m sidelined it’s not enjoyable.”

He didn’t feel normal until early September, as tracking pitches and lifting his head up and down while playing defense were challenging things to get back during his recovery. On Sept. 7, he began a rehab assignment with High-A Aberdeen. He played two games there, then four with Double-A Bowie.

On Sunday, in his first game back, he’ll bat cleanup as the designated hitter. He has hit .261 with three home runs and a .791 OPS in 28 major league games this season.

“It was awesome to see him today, and he said he’s feeling normal, which we’re really excited,” hitting coach Ryan Fuller said. “Having him be a force in that middle of the lineup is something we’ve always envisioned for him, so we’re really excited to have him back today and he looks great.”

Webb, a key part of the bullpen, has been sidelined since Aug. 4 with right elbow inflammation. It took longer than he anticipated to get healthy, because the process also included working on his shoulder and mobility in an effort to help the elbow.

He had a 3.08 ERA prior to the injury in 49 2/3 innings pitched. Webb, a platoon-neutral arm, will be a welcome addition to a bullpen that no longer has Craig Kimbrel as a closer. Yennier Cano is also dealing with soreness and has been unavailable for the past few games.

“I’m really excited to be a part of this team and to be able to help any way I can,” Webb said.