Dickerson was among four outfield starters the Rockies have, including Carlos Gonzalez, Charlie Blackmon, and recently-signed Gerardo Parra. The 26-year-old Dickerson hit .304 last season with 10 home runs and 61 RBI in 65 games.
The outfielder was held back by injuries, dealing with plantar fasciitis early in the season, and broken ribs late. The Rockies released a statement expressing how hard the move was to make, as they expect Dickerson to be a star as long as he stays healthy.
Colorado did get a good arm in return, with 29-year-old McGee adding to their bullpen. He had his best season two years ago, going 5-2 with a 1.89 ERA and 19 saves in 79 appearances. He also dealt with injuries last season, undergoing offseason elbow surgery, and went just 1-2 with a 2.41 ERA in 39 appearances in 2015.
Another move in the NL West saw the Los Angeles Dodgers keep second baseman Howie Kendrick on a two-year, $20 million deal. He was traded to the Dodgers in 2014 by the Angels, where he played nine seasons.
In his first full season in Hollywood, Kendrick hit .295 with nine home runs and 54 RBI. The deal is pending a physical after Kendrick declined a $15.8 million qualifying offer by the Dodgers following the conclusion of the season.
Kendrick is expected to be the starting second baseman, ahead of Chase Utley and Enrique Hernandez. Utley is expected to be a a backup third baseman behind Justin Turner after signing a one-year deal.