Drew Pomeranz, the 6-foot-6 left-hander who breezed through Colorado earlier in his career, returned to Coors Field on Saturday. And the Rockies responded by shuffling their lineup.
Manager Walt Weiss swapped out two regulars, left-swinging center fielder Charlie Blackmon and left fielder Gerardo Parra. Weiss replaced them with righties Brandon Barnes and Ryan Raburn.
With more right-handed options this season, Weiss is trying to exploit heavily tilted left-on-right matchups.
Pomeranz in his career has a strikeout-to-walk ratio more than double against lefties (3.79) as against righties (1.65). Lefty hitters have a .