The Angels needed to pare their rotation from six to five, with Jered Weaver returning from the disabled list and Tommy Hanson being activated off the restricted list. But now they need an extra arm to get them into the Thursday off-day, and Williams always seemed like the obvious choice.
The 31-year-old right-hander is 4-2 with a 2.87 ERA in 16 games (six starts) this season. Williams last pitched in the nightcap of Saturday's doubleheader, giving up three runs in three innings. The outing is not expected to affect his length for Wednesday's series finale in Baltimore.
Alden Gonzalez is a reporter for MLB.com. Read his blog, Gonzo and "The Show", and follow him on Twitter @Alden_Gonzalez. This story was not subject to the approval of Major League Baseball or its clubs.