Rockies' Tommy Doyle: Designated for assignment

Doyle was designated for assignment Friday.

The move clears a spot on the Rockies' 40-man roster for the addition of Cal Quantrill. Doyle has collected an 8.31 ERA over 18 relief appearances at the major-league level. He has struck out 181 over 161.2 frames in the minors, so perhaps he'll draw some interest on waivers.