Willie Mullins and Dan Skelton are sending strong squads for the BetGoodwin Easter Festival at Plumpton Racecourse.
Mullins closed the deficit on Skelton in the British trainers' championship at recent festivals but Skelton hit back by winning the feature Grade 2 handicap chase at Cheltenham.
On Sunday, Mullins has four runners in the £75,000 BetGoodwin Sussex Champion Hurdle, while Skelton has two runners.
On Bank Holiday Monday, the £100,000 BetGoodwin Sussex Champion Chase will feature four runners from Mullins and one from Skelton.