Mariners RHP Luis Castillo exits vs. Cardinals with leg injury

(Photo credit: Jeff Le-Imagn Images)
Seattle Mariners starting pitcher Luis Castillo exited Sunday's road game against the St. Louis Cardinals in the fourth inning with a lower left leg injury.

The right-hander allowed five hits, one walk and two runs while striking out three in three-plus innings. Castillo allowed a leadoff single in the fourth to Ivan Herrera and was replaced by right-hander Trent Thornton, who retired