LONDON -- New York Mets pitcher Kodai Senga won't make his season debut until after the All-Star break, manager Carlos Mendoza said Saturday.

"That's fair to say," Mendoza said in response to a question about the right-hander's rehab timeline.

The Mets are in London for a two-game series against the Philadelphia Phillies.

Senga, 31, has been sidelined by a capsule strain in his pitching shoulder. But he has started long-tossing.

"Hopefully he can start throwing bullpens at some point at the beginning of next week," Mendoza said.

Senga went 12-7 with a 2.98 ERA in 29 starts for the Mets last year, making the NL All-Star team during his first season in the majors after arriving from Japan. He struck out 202 batters in 166 innings, finishing runner-up for NL Rookie of the Year and seventh in Cy Young Award voting.