Robert Stock: Everything you need to know

Stock (shoulder) said Sunday that he'll require surgery to address thoracic outlet syndrome and could be sidelined for the remainder of the season, Jon Heyman of the New York Post reports. Stock is leaving the door open to pitch late in the season, but since he had been attending Mets camp on a minor-league deal, he's unlikely to surface in the majors at any point in 2026. The right-hander first experienced discomfort in his shoulder following his start Tuesday for Team Israel in an exhibition game against the Marlins.

Stock experienced shoulder discomfort while playing with Team Israel in the World Baseball Classic and will undergo testing, Laura Albanese of Newsday reports. Stock, entering his age-36 season, is on a minor-league contract with the Mets, and just weeks away from Opening Day, the veteran reliever began experiencing shoulder discomfort. The results of his testing should paint a clearer picture of how long he'll be sidelined, but according to Mark Feinsand of MLB.com, Stock won't pitch for Israel for the rest of the WBC.

Stock signed a minor-league contract with the Mets on Tuesday, Michael Mayer of MetsmerizedOnline.com reports. Stock saw major-league action for the first time since 2021 this past season and gave up three earned runs over 2.2 innings with the Red Sox. He was more successful at Triple-A Worcester, finishing the year with a 3.92 ERA and 1.33 WHIP over 85 frames. He will most likely begin 2026 at Triple-A Syracuse.