"I felt great," Martinez said. "We had a good game plan and we executed it. I got my pitch count up, but we were able to bring in reinforcements and get a big win."
The Rangers scored three runs in the first, all unearned thanks to errors by Kazmir and catcher Hank Conger. The first-place Astros now lead the Angels by two games and the Rangers by five in the American League West.
The Astros, who have lost 11 of their last 12 road games, were 2-for-11 with runners in scoring position. They drew a season-high eight walks and had a batter reach on a hit by pitch, but the clutch hits eluded them once again.