Mark Teixeira took batting practice, fielded grounders and did some light running Saturday for the first time since aggravating his strained left calf Sept. 8.

Though he felt fine, the real test won't come for a while.

"Grounders aren't going to be a problem," Teixeira said before the Yankees' 10-9 come-from-behind victory in 14 innings. "Hitting's not going to be a problem. It's when you have to accelerate that first step or maybe from a jog to a run."

Those tests won't come until later this week after he heads to Tampa tonight, but he has given up trying to predict when he will be better.

Teixeira said he doesn't know what he will do if the Yankees get to the postseason, and he still feels pain.