Mets RHP Zack Wheeler threw about 20 pitches off a mound on Sunday for the first time since he felt some tenderness in his right elbow during a recent bullpen session, reports Kristie Ackert of the New York Daily News.
Prior to Sunday, Wheeler most recently threw for about 10 minutes on Thursday, but only played catch.
Pitching coach Dan Warthen said Wednesday that the tenderness Wheeler felt during his recent bullpen session was likely due to scar tissue, which remains from his Tommy John surgery.
Wheeler's recent physical revealed no structural damage, but the team will take things slowly with him during Spring Training, Warthen explained.
Wheeler's innings limit this season will likely be in the low-100 range.
He hasn't pitched in the majors since 2014 due to the Tommy John surgery and multiple setbacks during the rehab process.
Warthen added that it would be "difficult" for Wheeler to pitch out of the bullpen due to the length of his recovery and the unfamiliarity he has with the role.