Pagan (hamstring) underwent an MRI exam Friday that showed positive results, MLB.com reports.
As a result, the reliever has been cleared to run on an anti-gravity treadmill. Pagan was removed from a game May 5 and placed on the 15-day injured list the next day due to a hamstring strain. He's eligible to return at any point but he's still well within his original return timeline of four-to-eight weeks.