Last year's Cheltenham Gold Cup winner Kauto Star, right, is seen with stablemate Denman, left, and their trainer Paul Nicholls at their stables in Ditcheat, England, Feb. 20, 2008. Kauto Star knows his biggest rival very well as he aims to win the Cheltenham Gold Cup for the second year in a row. Denman not only comes from the same Paul Nicholls stable but also lives in the box next door. The Kauto Star-Denman matchup is the highlight of the Cheltenham Festival, a four-day meet which starts Tuesday, March 11, 2008 and brings together the best jumpers in the sport. (AP Photo/Alan Crowhurst)