DENVER -- The Colorado Rockies declined left-handed starter Brett Anderson's $12 million option for 2015 on Saturday.

The Rockies paid Anderson a $1.5 million buyout, making him a free agent.

Anderson went 1-3 with a 2.91 ERA in an injury-filled season, his first in Colorado after a five-year stay with the Oakland Athletics.

Anderson had two stints on the 60-day disabled list. The first was with a fractured left index finger and the second with lower back problems. He ended up starting just eight games, finishing with 29 strikeouts and 13 walks.

Anderson is 27-32 with a 3.73 ERA in his career.