Mets' Kodai Senga did not throw bullpen session on Sunday due to triceps tightness

Mets starter Kodai Senga, who was supposed to throw a bullpen session on Sunday, suffered a setback in his recovery process due to triceps tightness and was unable to throw, manager Carlos Mendoza said on Monday.

The skipper went on to say that the team is not overly concerned with the injury after doctors evaluated Senga and that "hopefully" the right-hander can throw on Tuesday and get a bullpen session in by the end of the week.

"He went out, played catch, did his long toss, got on the mound but felt something on his tricep," Mendoza said. "So it got tight and he didn’t throw a bullpen. Doctors took a look at him, we're not concerned. It’s a low-level concern right now. He’s not throwing [Monday] and then hopefully he throws again [Tuesday]."

Senga last threw a bullpen session on Wednesday and came out of it feeling good with Mendoza even saying at the time that he felt like the right-hander is getting close with his mechanics to move on to the next stage of his recovery process.

Dealing with a shoulder capsule strain since early spring training, Senga, who is currently on the 60-day IL, has taken every precaution as he attempts a return and admitted last week that he was working through mechanical issues and that he wouldn't face live hitters until those have been resolved which has delayed his recovery somewhat.

This latest setback also appears to have been taken in an abundance of caution.

"He’s a unique personality, here," Mendoza said last week. "He’s a player that knows himself better than anybody and we’re going to continue to give him time and whatever he needs to get him back on the mound.”