Dave Williams, who hasn't pitched in a game since Sept. 11, could be added to the roster. Minaya said Williams, who beat the Cardinals on Aug. 24, threw five or six innings in a simulated game in Florida.
Williams was acquired from Cincinnati in May.
"Did I expect these guys to be kind of possibly key guys in the playoffs?" Minaya said. "That wasn't my hope. But they are. But one thing about them -- they're not afraid to take the ball."