Mets RHP Anthony Swarzak has shut down his throwing program due to lingering discomfort, reports Anthony DiComo of MLB.com.
Swarzak threw a baseball on Sunday for the first time since suffering a left oblique strain and threw again on Monday, according to manager Mickey Callaway.
Swarzak, who has been out since April 1, was supposed to head to Port St. Lucie after Wednesday's game to continue his rehab, but will instead remain in New York to receive treatment.
The 32-year-old Swarzak, who missed time during Spring Training due to a strained left calf, departed the second game against the Cardinals in the eighth inning due to the injury.
Swarzak said he felt the pain for a few pitches leading up to the point when he was forced out of the game.
The Mets signed Swarzak to a two-year, $14 million deal this offseason.
Swarzak had a 2.33 ERA (2.74 FIP) and 1.03 WHIP with 91 strikeouts (a career-high 10.59 K/9) in 77 1/3 innings (70 games) last season for the White Sox and Brewers.
Since losing Swarzak, the Mets' bullpen has allowed just six runs in 43.1 innings, for a 1.25 ERA.
If the Mets' 25-man roster is still structured the same way when Swarzak returns, a likely candidate to be optioned to Triple-A Las Vegas is Paul Sewald.