MINNEAPOLIS -- Minnesota Twins manager Ron Gardenhire told reporters after Saturday night's 4-0 win over Seattle that catcher Joe Mauer has tendinitis in his right shoulder.

Mauer, who went 3-for-4 with a double, received a cortisone shot after the game and is likely to sit out until at least Tuesday. The Twins begin a four-game series in Tampa Bay on Monday after Sunday's series finale against Seattle.

"It's a little bit of tendinitis in his shoulder that just won't go away," Gardenhire said. "Doctors seem to think that this will be a good thing for him, and we're just going to have to live with it.

"He's had an MRI, everything's fine, everything's sound. He's just got a little tendinitis in there that keeps bothering him, won't go away. You put this (shot) in there, give it a couple days without throwing, and go from there."

Gardenhire said Mauer's injury stems from a foul tip he took earlier this season.

Despite the sore shoulder, Mauer is 24-for-58 (.414) since the All-Star break, raising his batting line from .293/.368/.424 to .313/.382/.468.