Swinging for fences just got more difficult at Coors Field (Yahoo Sports)

Swinging for the fences just got a little more challenging at Coors Field, with the Colorado Rockies raising the outfield walls in two spots for the upcoming season. ''Every change we make to our process, our field of play or our team, is with the goal to be more competitive as a result,'' Rockies general manager Jeff Bridich said Tuesday.