The return of Roy Oswalt has not gone as planned and now the 35-year-old has landed on the disabled list.
Oswalt lasted just 1 2/3 innings in his start on Sunday against Arizona before leaving with a strained hamstring.
In four starts since returning to the major league level Oswalt is 0-4 with a 7.64 ERA and a 1.75 WHIP.
Currently five games under .500 the Rockies 5.5 games out in the NL West.
