SEATTLE — The Mets have lost several arms this season that are never to return or still in limbo, but on Saturday they got one back.
Reed Garrett, who spent the past month on the injured list after swelling arose in his right elbow, was activated Saturday and threw a scoreless inning — striking out all three batters — during the Mets’ 4-0 loss to the Mariners at T-Mobile Park.
Over the first three months of the season, the right-hander was three different pitchers: lights-out, underwhelming and then respectable.
Manager Carlos Mendoza said the initial plan is for Garrett to ease his way back in lower-pressure situations.
But Garrett, with his 97 mph heat, brings potentially another arm for high-leverage situations.
“He’s a huge addition to our bullpen,” Mendoza said.
To create space for Garrett the Mets optioned lefty Alex Young to Triple-A Syracuse.
Young pitched a scoreless eighth inning Friday night.
The roster move left Danny Young as the club’s only lefty reliever.
Garrett overall hac pitched to a 3.64 ERA in 36 appearances for the Mets this season entering Saturday’s appearance, with 63 strikeouts in 42 innings.
His return came after two minor league rehab appearances for Syracuse.
Sean Reid-Foley and Dedniel Nunez are two other relievers on the comeback trail.
Reid-Foley was scheduled to pitch one-plus innings for Syracuse on Saturday and Nunez is expected to throw off a bullpen mound for the first time since he hit the IL last month with a forearm strain.
The Mets have lost Brooks Raley and Drew Smith this season to torn ulnar collateral ligaments.
Christian Scott and Kodai Senga are the starting pitchers on the IL.
Scott, who was diagnosed with a sprained UCL, is symptom-free and could begin a throwing program next week — but it’s still unclear if he will need Tommy John surgery.
Senga has a calf strain and is expected to miss the remainder of the regular season, but he could potentially return if the Mets reach the postseason.
Starling Marte is scheduled to play for Double-A Binghamton on Sunday to continue his rehab assignment.
Marte last week played two games for Low-A St. Lucie.
