Sheets played a little catch before Saturday's road game at San Diego, but clearly, gripping the ball to make various pitches is a completely different issue.
The right-hander first got the blister on Tuesday in his start at Dodger Stadium. He lasted 6 1/3 innings before coming out of the game but was hit with the loss.
As if getting into the starting lineup in your Major League debut doesn't cause enough nerves, knowing you have to face Greg Maddux certainly isn't going to help things.
Ryan Braun made his much-anticipated debut at third base on Friday night at PETCO Park, starting at third base, doubling and bringing home two runs. He hit a Maddux curveball for his first Major League hit.
"I just went out there and battled against him every at-bat. I can see why he's had so much success. He certainly knows how to pitch," Braun said.
The University of Miami product is 18 years younger than Maddux, but said he tried not to think about whom he was facing on the mound once the game started. Earlier in the day was a different story.
"I think before the game I was thinking about more than I was during the game. Before the game, it was a surreal experience," the 23-year-old said. "I grew up watching him, and he's one of the best pitchers in the history of the game, certainly in this era. It's pretty special and obviously a great challenge."
Another challenge for Braun? Finding some time to sleep. After getting the callup and making his way to San Diego, he had friends and family make the short trip down from the Los Angeles area, where he grew up. Braun got the ball from his first hit and the lineup card with his name in it, and he gave those to his parents.
"It was definitely a lot of fun. It's a special thing to have them here for my first big-league game," he said.
After spending time with family and friends, Braun finally got some much-needed sleep.
"It felt so good to get some rest," he said.
Braun hit his first Major League homer in the third inning on Saturday off Padres right-hander Justin Germano.
Bush struggling: It's been a tough stretch for starter Dave Bush, the pitcher who led the Brewers in wins last season with 12.
He's 3-5 with a 6.13 ERA after Friday night's loss against San Diego, the second consecutive decision he's dropped. In those three wins, he's gone at least six innings and allowed no more than three runs.
"The games he's thrown good, he's looked like David Bush," said Yost. "The games where he hasn't, like last night, he wasn't himself from the first pitch on. From the very first hitter, when he struck out Marcus Giles on three pitches, you knew it was going to be a long night."
Striking out someone on three pitches doesn't sound too bad, but Yost said he could tell Bush's command was off.
"He was trying to go down and away, down and away, and all three pitches were up out over the plate," Yost said.
"You ride it out and keep on working. He'll find ways to get over it."
To close out the series and the road trip, right hander Jeff Suppan (6-4, 3.49) will face Padres ace Jake Peavy (6-1, 1.63) on Sunday at 3:05 p.m. CT.