Baseball: Clemens hurts leg

Clemens was hurt while running to first base after lining a two-run single to right field that gave Houston a 5-4 lead in the fourth inning. He's day to day, but doesn't think he'll miss his next start.

"Running was going to be difficult, pitching maybe not as difficult," Clemens said. "It started the second inning behind my knee and I took my little brace off. I felt like I got kicked and I was waiting for the muscle to relax. I didn't feel a pop. I didn't feel like it tore."

The injury occurred just hours after the Astros said left-hander Andy Pettitte would have season-ending elbow surgery.

Clemens allowed four runs and five hits in three innings, and struck out three. The six-time Cy Young Award winner is 12-4 with a 2.94 ERA in his first season with the Astros.

"I can handle not pitching well," Clemens said. "I cannot handle when my body shuts down on me."

Clemens was 9-for-50 this season before his single, and is 3-for-3 in his career with the bases loaded. He's a lifetime .197 hitter (14-for-71) with seven RBIs, six coming this season.