The Rockies have a late-innings reliever in right-hander Rafael Betancourt, whom they acquired from the Indians on Thursday for Class-A right-hander Connor Graham. Betancourt gives the Rockies an experienced arm for, potentially, the eighth inning as primary setup man for closer Huston Street.

With the Rockies leading the National League Wild Card race by 1 1/2 games over the Giants, who come to Coors Field on Friday, and with Rockies righty Manuel Corpas undergoing arthrtscopic surgery on his throwing elbow on Friday, the move became necessary. The Rockies also called up their top pitching prospect, Jhoulys Chacin, from Double-A Tulsa, for a right-handed middle role.

The Indians, who had no intention of picking up a $5.4 million option on Betancourt for 2011, add Graham, a Bowling Green, Ohio, native who has a 93 mph fastball.