CHICAGO -- The Reds got the good news they were hoping for. Aaron Harang does not have a serious arm injury.
Harang was diagnosed Thursday with a strained right forearm, and an MRI test came back normal. Headed for the 15-day disabled list, he will be shut down from throwing and be examined again in one week by medical director Tim Kremchek.
"He won't be able to throw for at least a week, and then we'll build it back up," Reds general manager Walt Jocketty said. "It's one of those things we want to make sure he takes the time to let it heal so when he comes back, he's 100 percent. I expect after the two-week period, he would be ready to go."
Harang's most recent start was pushed back from Saturday to Tuesday because of a stiff forearm. The right-hander said he was feeling fine despite giving up a career-high seven walks over 4 1/3 innings in a 7-3 loss to the Cubs.
The next morning, however, Harang's forearm had stiffened up again. The club sent him back to Cincinnati for tests and a Kremchek examination.
"Great news on Aaron," manager Dusty Baker said after the Reds' 12-7 win over the Cubs on Thursday. "This is what the doctor thought, a strained muscle. That's huge news."
Homer Bailey will take Harang's place in the rotation and pitch on Sunday at Milwaukee. With the three-day All-Star break and the four days this week he would have been off between starts anyway, the DL stint won't cost Harang as much time out.
Harang is 3-11 with a 4.76 ERA in 20 games, including 19 starts, over 123 innings this season. He is second in the National League in losses and hits allowed with 138. Speculation of an arm injury grew after the ace struggled following a four-inning emergency relief appearance on May 25. In eight starts since that outing, he is 1-5 with a 7.31 ERA and 63 hits allowed over 44 innings.
An examination performed on Harang by Kremchek last week indicated there was no elbow ligament damage.
"But it's always good to have the MRI to confirm that," Jocketty said.
Mark Sheldon is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.