If he can't hit for power at Colorado Springs, I don't want him anywhere near the major league club. His value lies in his power, as he's never going to be a plus defender or table setter. Colorado Springs and, to an extent, Coors Field are not really the home run fields that they're made up to be. They're batting average and doubles/triples fields much more so. The fields are very large and cavernous so that the altitude does not make it so that there are 15 HR/game. Therefore, the ball still goes out of the park a little bit more than average, but BABIP and therefore batting average is insane because there is so much ground to cover for fielders. Plus, you have the whole thing with pitches not breaking as expected for pitchers so the ball is in play more. It's not that the altitude fields aren't good for HRs, but they are not the driving force behind what everyone's assumption of them is. For instance, take Charlie Blackmon: Home: 64 HR, .342 BA, 30 3B Away: 61 HR, .263 BA, 7 3B Random: Blackmon has played in 30 more away games than home games over his career so this is even more impressive, though maybe it does support the more HR theory a bit more. DJ LeMahieu (I'm lumping in the partial Cubs year here because I'm lazy): Home: 18 HR, .329 BA, 90 2B, 20 3B Away: 24 HR, .269 BA, 57 2B, 9 3B Some Rockies like Arenado do hit a bit more HR at home but part of that is because it's really hard to hit homers at Petco, AT&T, and Chavez Ravine.