SAN DIEGO — Colorado Rockies left-handed starting pitcher Brett Anderson will undergo season-ending surgery Thursday to repair a disk in his lower back.
Anderson last pitched on Aug. 5, and he departed that start against the Chicago Cubs after three innings due to back pain.
The 26-year-old veteran is expected to be ready for spring training. The rehab time for such a surgery is five to six months.
Anderson, who also lost three months on the disabled list after breaking his left index finger on April 12, finishes 2014 with a 1-3 record with a 2.91 ERA in eight starts.
The Rockies acquired Anderson from the Oakland A’s last December in a trade for left-hander Drew Pomeranz and minor league right-hander Chris Jensen. In four seasons with Oakland, Anderson went 26-29 with three saves and a 3.81 ERA in 84 games (73 starts).