Mets' Senga won't throw for 3 weeks after shoulder injection

New York Mets manager Carlos Mendoza said Sunday that right-hander Kodai Senga will not throw for three weeks after he received a PRP injection in his shoulder, according to Newsday's Tim Healey.

Senga was diagnosed with a shoulder strain earlier this week is set to begin the regular season on the injured list.

"It is regretful that I’m not able to be a part of it in the beginning of the season," Senga said through an interpreter, according to MLB.com's Anthony DiComo. "But I think I just have to be positive and look forward to being back out there with the team."

Senga is entering the second season of a five-year, $75-million contract. The 31-year-old authored a terrific rookie campaign for the Mets, posting a 12-7 record with a 2.98 ERA and 202 strikeouts across 166 1/3 innings to finish as runner-up for NL Rookie of the Year.

The Mets are currently expected to begin the season with a rotation featuring José Quintana, Luis Severino, Sean Manaea, Adrian Houser, and Tylor Megill.