Twins catcher Joe Mauer is getting a cortisone shot in his right shoulder to treat tendinitis and is expected to miss one or two days, Manager Ron Gardenhire said after his team's 4-0 victory over Seattle on Saturday night.

Mauer has been hitting well -- .414 since the All-Star break -- but his arm has been sore since he took a foul tip off his shoulder in early July.

Gardenhire noted that Mauer likely wouldn't have caught the next two days anyway, since Sunday is a day game after a night game, and Carl Pavano (whose personal catcher has become Drew Butera) is pitching Monday.

"He's had an MRI and everything's sound," Gardenhire said. "He's just got a little tendinitis in there that won't go away. Give him a couple days without throwing and go from there. It should be good."

Gardenhire did have good news about Justin Morneau, however. Morneau is scheduled to take batting practice on the field Sunday morning for the first time since he suffered a concussion on July 7.