Ranked a little lower than you would initially think mainly because of his lack of defensive contributions and overall bWAR, Garrett Atkins was with the Colorado Rockies for all but his final season in the Majors.  Atkins would have three straight seasons with 20 or more Home Runs, two of which also saw him tally 100 RBIs.  He also hit for a decent average, twice going batting over .300.  He would actually receive a few MVP votes in 2006.  Again, if only he could play defense more consistently!

Kevin Ritz had a 17 Win season for the Colorado Rockies in 1996.  That year, he also led the National League in Earned Runs allowed.  Those facts aside, this is still a pitcher who the year before finished 8th in bWAR for Pitchers and was a starter for Colorado for four-plus seasons.

“Starvin” Marvin Freeman bounced between starting and relief pitching in the majors, but in the strike-shortened season of 1994, he would have his best season by a substantial margin.  The then member of the Colorado Rockies finished 4th in Cy Young voting, going 10 and 2 with a 2.80 ERA and a 4.5 bWAR.  That 1994 season, which may have been a fluke, nevertheless catapulted him on this list.

A Starting Pitcher throughout his career, Armando Reynoso was with Colorado for four seasons, coinciding with the first four years of the franchise's existence.  His best season was his first, where he went 12 and 11 with 117 Strikeouts.  Reynoso would win 30 Games for the Rockies.