Heasley was returned to the major-league roster and placed on the 15-day injured list Tuesday with a right elbow stress reaction.
Heasley was outrighted to Triple-A Durham on Saturday, but because he suffered his injury during his time with the Rays, he'll be placed on the Rays' 15-day injured list and also reclaim a spot on the 40-man roster. The 29-year-old righty gave up five earned runs in four innings during his lone outing with Tampa Bay and will likely be outrighted to Triple-A again once he's healthy.