The Rockies selected Beck's contract from Triple-A Albuquerque on Tuesday.
Beck, 23, has slashed .307/.405/.594 with five home runs and five stolen bases over 121 plate appearances this season with Albuquerque. He has swing-and-miss concerns, but Beck's raw power should certainly play well at Coors Field if he can make enough contact. Beck should receive regular playing time in the corner outfield spots.