"I threw everything I had and as I went along, I amped up the intensity and let 'em go," Thornton said. "Got out there real good and had no problem at all."
An extended Spring Training because of the World Baseball Classic actually benefited Thornton, who backed off his schedule a bit when the soreness flared. He basically took one live BP out of his schedule, giving him four bullpens and two live BPs before his appearance.
"It kind of went the wrong way this time," said Thornton, who admitted he cranked it up a little too much a little too early during Spring Training. "We backed off a couple days, picked it right back up and didn't lose anything I worked for this offseason."
Scott Merkin is a reporter for MLB.com. Read his blog, Merk's Works, and follow him on Twitter @scottmerkin. This story was not subject to the approval of Major League Baseball or its clubs.