NEW YORK -- Tanyon Sturtze, who isn't exactly in his manager's good graces, is on the 15-day disabled list.
The Yankees shelved the struggling right-hander due to soreness in the front of his right shoulder following a 4-3 victory over the A's at Yankee Stadium on Saturday.
The Yankees called up veteran right-hander Scott Erickson to take the injured pitcher's place.
"We'll be doing some tests," Yankees manager Joe Torre said. "He has kept it to himself. He wanted to go out there and be the team guy. You can't go out there and get this thing fixed by yourself. Hopefully, he can get this thing fixed in 15 days."
Sturtze, who was slow to reveal an injury last season, faced three batters on Saturday, and two of them reached base safely. In 10 2/3 innings this year he has given up 17 hits, walked six, struck out six and compiled a lofty 7.59 ERA.
Torre said Sturtze demonstrated "pretty good" velocity, but that the reliever wasn't finishing off some pitches.
Torre was upset with Sturtze for not being up front about the soreness, especially since the pitcher didn't come forward last season.
"He should know better," Torre said. "If you aren't going out there with all your ammo, it's not going to give us what we need."
Erickson was 1-2 with a 4.24 ERA in 12 relief appearances at Columbus.
Kit Stier is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.