Marcus Stroman was pitching well through four innings against the Cleveland Indians Wednesday night but was removed from the game after four innings.
It was initially thought Stroman may have been dealing with some sort of finger issue but the Mets announced soon after his removal was because of left hamstring tightness.
According to Bob Nightengale of USA Today, Stroman had an MRI which revealed tightness and the Mets say they are not concerned.
Stroman allowed just one run over four innings (five hits, one strikeout) before giving way to Jeurys Familia.
In 24 starts this season for the Mets and Toronto Blue Jays, Stroman entered play Wednesday with an ERA of 3.21. He was acquired by New York last month in exchange for left-handed pitching prospect Anthony Kay and righty Simeon Woods-Richardson.
The Mets went on to win the game 4-3 in 10 innings on a walk-off hit by J.D. Davis.