The Rockies optioned Stevens to Triple-A Albuquerque on Sunday.
Stevens was called up for his Rockies debut May 21 but struggled mightily in 16 games, going 2-for-28 with five walks and 13 strikeouts. The 27-year-old will now return to Albuquerque, where he's batting .362 with three homers and six steals through 40 contests this season.