But the right hamstring that Silva tweaked in his previous start against the Angels will keep him out until at least Saturday, manager Lou Piniella said.
"He tweaked it pretty good the other day, and we had to get him out of the game after 69 pitches," Piniella said. "He had a throw-day today with the pitching coach [Larry Rothschild]. It was decided that we should hold him back and give him a little more time, and that's exactly what we're going to do."
Silva is now slated for Saturday's start against the White Sox, and lefty Ted Lilly will get the ball Thursday against Mariners ace Felix Hernandez. Carlos Zambrano will now start Friday and Tuesday's starter, Ryan Dempster, is scheduled to toe the slab on Sunday.