Seattle Mariners right-hander Luis Castillo left Sunday\'s game due to a strain in his left hamstring, and will undergo an MRI on Monday to assess the damage.
Castillo told reporters that some discomfort first arose in the fourth inning when he moved on the mound to evade a throw that never came from catcher Mitch Garver on an Ivan Herrera stolen base.
\"The discomfort\'s there. Tomorrow we\'re going to get some [tests] done, just to see what it is, but hopefully it’s not too bad,\" Castillo said.
The Mariners are 4 1/2 games back of the Houston Astros in the American League West. They sit 3 1/2 games back of a Wild Card berth.
