Sir Ian was going to pitch on Saturday, but he strained a muscle in his back. As Clemens was slotted for Sunday, he just moved up a day. Now, that's not happening, either.

Roger Clemens' time as New York's probable starter for Saturday's matinee against Toronto lasted but a few hours, as the 45-year-old right-hander tweaked his left hamstring during cardio workouts and will also be scratched.

Doesn't seem to be anything serious, but they will hold him back and Phil will start today, instead. Mussina is set to go Sunday and then they are hoping that Clemens can come around and pitch Monday.