MILWAUKEE -- The Brewers placed reliever David Riske on the disabled list Thursday with a right elbow injury and recalled right-hander Mark DiFelice from Triple-A Nashville.
DiFelice, who was briefly in big league Spring Training camp while rehabbing a knee injury, was to join the team on Friday in Boston, where the Brewers begin a weekend Interleague series against the Red Sox.
The official diagnosis for Riske was a hyperextended elbow, and he will receive a shot to relieve inflammation. He could have been ready to pitch in as few as three days, but with a big Interleague series looming in Boston, the Brewers were unwilling to travel with a short bullpen.
"They think [Riske] is going to be ready in five or six days, but the best thing to do is to go ahead and put him on the DL," said Brewers manager Ned Yost, whose bullpen was a bit worn out entering Thursday's game. "Let's go ahead and get this taken care of now."
Riske was understandably disappointed.
"You don't want to go on the DL," he said. "It means I have to take 15 days and won't be able to help the team out. I want to be healthy, too."
Riske pitched two-thirds of an inning in Wednesday's loss to the Dodgers, recording the final out of the seventh inning and then the first out of the eighth before abruptly leaving the game when he felt pain. X-rays were negative for serious damage, and Riske was examined Thursday morning by head team physician William Raasch, who confirmed the diagnosis.
Brewers assistant general manager Gord Ash, the team's point man on injuries, said the X-ray may have revealed a bone spur or chip in Riske's elbow -- somewhat common for veteran pitchers -- that contributed to the inflammation.
In 18 appearances since he signed a three-year free agent contract with Milwaukee, Riske is 0-1 with a 4.71 ERA. His only save came on Opening Day against the Cubs.
DiFelice, 31, signed with the Brewers out of the independent Atlantic League prior to last season and was 3-0 with a 3.91 ERA in four starts this season for Triple-A Nashville. He last pitched on May 9 against Tucson, allowing five runs and seven hits in six innings of a no-decision.
Adam McCalvy is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.