Martin had an RBI double in the eighth inning, then left the game with tightness in his buttocks area. He wouldn't even call it an injury.
"It's just been stiff a couple of days," he said. "It's not really an issue. You wake up and it's stiff and you stretch before the game, and I felt it on the swing before [the double]. It's something I can play through, so I play through it. This would be easy if you felt great every time. It's definitely not an injury."
Whatever it is, it might explain why Martin struck out in his two previous at-bats and fanned three times while going 0-for-5 Sunday.