Fairbanks (shoulder) will begin a rehab assignment at Triple-A Durham on Sunday, Neil Solondz of the Rays Radio Network reports.
Fairbanks apparently felt good after he faced hitters in Port Charlotte on Thursday, as he'll now return to game action with the minor-league club. Since the right-hander has spent time building up through bullpen sessions and live batting practice, he's unlikely to require many rehab appearances before he rejoins the Rays.