The Rays have designated left-hander Sean Gilmartin for assignment in order to open a spot on the roster for top pitching prospect Shane McClanahan, tweets Juan Toribio of MLB.com.
A former first-round pick and top pitching prospect himself, Gilmartin had a strong rookie campaign with the Mets as a Rule 5 pick back in 2015 but hasn’t found much success in the big leagues since. He logged just 4 1/3 frames with Tampa Bay this season, yielding four runs on seven hits and four walks with five strikeouts. Since that sharp rookie season, Gilmartin has a combined 6.09 ERA in 54 2/3 innings. He did notch a 3.95 ERA through 66 innings in an extremely hitter-friendly Triple-A setting last year, though Gilmartin carries a more pedestrian 4.93 mark in 486 frames at that level. He’ll be a minor league free agent at season’s end, assuming no other club claims him.