The latest update on him:
Apr 28 Updating previous items, Mychael Urban, of Athletics.MLB.com, reports X-rays previously taken on Oakland Athletics RP Kiko Calero (elbow) revealed a bone spur in Calero's elbow. However, trainer Larry Davis indicated Calero has had the bone spur since 2001, and the team still expects Calero to be able to pitch over the coming weekend.
what do you guys think of him for the rest of the year? Can he be a reliable guy to Lower ERA+WHIP, and pick up some Wins and K's?