http://espn.go.com/mlb/story/_/id/84...-record-losses

DENVER -- Colorado Rockies manager Jim Tracy resigned Sunday, stepping down after the team set a franchise record for losses.
The Rockies said a search for Tracy's replacement would begin immediately. Colorado finished last in the NL West this year while going 64-98.

Tracy
Tracy was promoted from bench coach to manager in May 2009. He was voted the NL Manager of the Year that season after guiding Colorado into the playoffs.
The Rockies went 294-308 under Tracy.
I gotta admit, I'm surprised. Considering the pitching the GM got him, there wasn't much he could've done to be honest.