Denver, CO -- (Sports Network) - Houston Astros starter Wandy Rodriguez left Sunday's 7-5 win over the Colorado Rockies after one inning with a left oblique strain.

Rodriguez, who allowed one hit and fanned three was replaced by right- hander Jack Cassel. The veteran lefty, who has battled injuries the entire season, was 8-6 with a 3.76 earned run average in 22 previous starts.