Arizona activates Davis, says he will pitch Friday against Atlanta

MIAMI -- Arizona Diamondbacks left-hander Doug Davis, who has been recovering from thyroid cancer surgery, was activated Thursday and will return to the rotation for a weekend series against Atlanta.

Davis' cancerous thyroid gland was removed April 10. He was declared cancer-free this month and rejoined the Diamondbacks for this week's series at Florida, and manager Bob Melvin has said he'll start Friday night against the Braves.

To make room for Davis, Arizona designated right-hander Brandon Medders for assignment. He was 1-0 with a 4.58 ERA in 18 games pitching out of the bullpen.

Davis, who has missed 36 games this season, made two rehab starts for Triple-A Tucson.

The cancer was discovered before the season, but he made two starts before undergoing surgery April 10. He is 1-1 with a 3.72 ERA.