The New York Mets placed right-hander Sean Reid-Foley on the 15-day injured list Saturday with a right shoulder impingement.
The move is retroactive to Thursday for Reid-Foley, who began the season with the same injury.
Reid-Foley, 28, allowed one hit in one-third on an inning of relief in a blown save against the Texas Rangers on Wednesday.
"The last outing in Texas, it took him a while to get going," Mets manager Carlos Mendoza said before New York's game at the Chicago Cubs. "After a couple of hitters, [pitching coach Jeremy Hefner] made a mound visit and he expressed that."
Mendoza said Reid-Foley will have an MRI on Monday.
"As of right now, he doesn't seem to be too concerned. Same thing with the trainers," Mendoza said. "But again, you're sending a pitcher to get an MRI. We just got to wait."
Right-hander Kodai Senga is expected to throw live batting practice Sunday, continuing his comeback from a capsule strain in his pitching shoulder.
Mendoza said Senga will throw about 20 pitches to hitters at the team's facility in Florida. The Mets will make a decision on the next step for Senga after that session.
"At this point, it's try to get through tomorrow, see how he comes back afterward, how he bounces back, and then we'll make a decision whether he needs another live BP," Mendoza said. "We'll listen to him, but again, I think it's just one step at a time."
The Mets suffered another injury setback when Starling Marte was removed from Saturday's game in the second inning because of right knee soreness -- a persistent issue for the veteran outfielder. He grounded out in the top of the inning and was replaced in the field before the Cubs batted in the bottom half.
Senga finalized a five-year, $75 million contract with New York in December 2022. He went 12-7 with a 2.98 ERA in 29 starts last year, making the National League All-Star team and finishing second in balloting for NL Rookie of the Year.
The 31-year-old Senga got hurt during spring training. He threw live BP on April 29 and May 4 but said his mechanics didn't feel right. He also had his throwing program disrupted by triceps tightness and nerve inflammation in his elbow.
He threw a bullpen session Wednesday.
Reid-Foley is 1-2 with a 1.66 ERA in 23 relief appearances this season. He is 8-12 with a 4.10 ERA in 71 career appearances (13 starts) with the Toronto Blue Jays and Mets.
The Mets recalled left-hander Danny Young from Triple-A Syracuse in a corresponding transaction. Young, 30, is 2-0 with a 1.00 ERA in nine relief appearances with the Mets this season. He has a 1.90 ERA in 20 career relief appearances with the Seattle Mariners, Atlanta Braves and Mets from 2022 to 2024.
The Associated Press and Field Level Media contributed to this report.