He beat out Manny Corpas to earn the role of the Rockies' closing pitcher for the 2009 season. After poor performances by Street, Corpas was renamed the closer on April 17; however, Corpas also pitched poorly, and the closer job was given back to Street on May 1. Since that time, Street excelled in the closer role and was a key cog in the Rockies' mid-season run back into the race (16–1 from June 4 to 22). He finished 2009 with 35 saves in 37 opportunities, a 3.06 ERA and 70 strikeouts in 61.2 innings.