Michael Vick was held out of practice Wednesday with a sore left hamstring, but the Atlanta quarterback said he may play Sunday at Buffalo even if he can't practice the rest of the week. ``As long as I'm getting mental reps, I think I'll be able to go out there and execute the game plan,'' Vick said. ``It's possible I may not practice all week. Who knows? I'm just playing it by ear right now. I just have to be able to be me.'' Second-year quarterback Matt Schaub, who made one start last season, ran the first-team offense Wednesday. Vick did some light running on the side but did not try to test the hamstring. ``We're not trying to rush it,'' he said. ``It's too early in the week.''