The Mets transferred Raley (elbow) from the 15-day injured list to the 60-day IL on Sunday.

Raley underwent Tommy John surgery with an internal brace augmentation Wednesday, Tim Healey of Newsday reports.

Raley will undergo Tommy John surgery sometime next week, Tim Healey of Newsday reports.

Manager Carlos Mendoza said Wednesday that imaging revealed a UCL strain in Raley's left elbow, Tim Britton of The Athletic reports.

Manager Carlos Mendoza said Friday that Raley (elbow) is "not close" to throwing and will be seeing another doctor, Tim Britton of The Athletic reports.

Mets manager Carlos Mendoza said Thursday that Raley (elbow) is no longer on track to return from the 15-day injured list when first eligible Sunday, Anthony DiComo of MLB.com reports. "We're going to take it slow [with Raley]," Mendoza said.

Raley was placed on the 15-day injured list Sunday with left elbow inflammation, Tim Healey of Newsday reports.

Raley (1-0) picked up the win Sunday against the Royals, striking out two in a perfect eighth inning.

Raley walked two in a scoreless seventh inning Sunday to record his third hold of the season in a win over the Reds.

Raley struck out the side in a perfect inning of relief during Friday's Grapefruit League game against the Nationals.