"He doesn't want to sit around and not throw for a few days, but he's not available," Twins manager Ron Gardenhire said.
With Perkins out, Jared Burton will serve as closer. Gardenhire said that the bullpen is in much better shape than it was in Friday's 9-6 loss to Baltimore, as Brian Duensing and Ryan Pressly were also unavailable to pitch because of heavy workloads in previous games. But left-hander Pedro Hernandez, who is slated to start Monday against the White Sox, will be available out of the bullpen, in case he's needed.
"We have a little bit better chance today with some people," Gardenhire said. "Burton would be a third day in a row, but said he feels great. [Anthony] Swarzak is always gonna say he feels good. Duensing is OK. [Josh] Roenicke says he feels good. And Casey [Fien] says he feels fine."
Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.