It's one of the biggest days of the horse racing year as Ed Chamberlin and Francesca Cumani present coverage of Gold Cup Day at Cheltenham. The big race itself is due off at 3.30 pm and features a fascinating clash between last year's winner Sizing John and King George VI Chase hero Might Bite. Supporting races include the Triumph Hurdle (1.30 pm) and Albert Bartlett Novices' Hurdle (2.50 pm), the County Hurdle at 2.10 pm, and the Amateur Riders' Gold Cup - the Foxhunters' Chase - at 4.10 pm.