Colorado Rockies right-hander Kip Wells will undergo surgery Tuesday for a blood clot in his right hand.
The Rockies said Monday the surgery will be done 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.