"When a guy in the Minor Leagues is dealing with some sort of issue, we tend to bring him to Chicago for confirmation with our specialists that everything is fine," White Sox general manager Rick Hahn said. "Doctors in Chicago echo the analysis of the guys in the Minors. He's dealing with a bruised thumb. Hopefully he will be back out there in the coming days."
Moncada, who is hitting .331 with 11 extra-base hits, 10 stolen bases and 27 runs scored, played with the bone bruise before the organization slowed him down.
"It goes back a few weeks," Hahn said. "It started getting a little more swollen and aggravated him a little more.
"He wanted to keep playing and didn't want to go on the DL. But we decided to take a little time here, get it 100 percent, before he gets back out there."
Healing arms race
Right-handed reliever Jake Petricka threw a live batting practice Monday at Chase Field as part of his ongoing recovery from a strained right lat. Petricka, who missed all but nine games last season due to right hip surgery, has been out of action since April 5.
"I'm just kind of waiting on that muscle and letting it tell us when we can push it harder each day," Petricka said. "Finally about the last two weeks we've been able to get back out there throwing and start pushing it in ways that you can see the progress. It's been much better the last couple of weeks."
Nate Jones, sidelined by ulnar neuritis in his right elbow, faced hitters for the first time Monday in his side session. The hard-throwing right-hander did not incorporate sliders into his mix.
"With these relievers, it eventually gets to the point where they've accomplished everything from a pitch-count standpoint, where eventually you send them out on a rehab assignment," Hahn said. "Nate, hopefully again, within the next 7 to 10 days where we feel it's time to send him out."
Scott Merkin has covered the White Sox for MLB.com since 2003. Read his blog, Merk's Works, follow him on Twitter @scottmerkin, on Facebook and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.