PHILADELPHIA -- Phillies right-hander Jonathan Pettibone had an MRI exam on his right shoulder on Thursday, and he said it confirmed inflammation.
Pettibone will be shut down from throwing to give the shoulder more time to rest.
"It's going to be hard to get the proper rest and come back," he said, when asked about his chances of pitching again this season.
Pettibone said it could have been worse.
"It's nothing serious," he said. "It's just going to take time. They gave me six days at first, and it just wasn't enough. It's mild inflammation, but it never really went away."
Todd Zolecki is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.