DENVER — Colorado Rockies right-hander Kip Wells will have surgery tomorrow for a blood clot in his right hand.

The Rockies said today the operation will be performed at Barnes Jewish Hospital in St. Louis.

The 31-year-old Wells was placed on the 15-day disabled list effective April 28. He was 1-1 with a 2.29 ERA in 10 games and one start.

No date has been set for his return.