An intriguing renewal of the Rabobank Champion Hurdle features on day four at Punchestown, with Hurricane Fly and Rock On Ruby renewing their rivalry.

First and second at Cheltenham last month, Willie Mullins' brilliant hurdler was the first horse since Comedy Of Errors in 1975 to regain his Champion Hurdle crown and the nine-year-old will be very hard to beat in a bid to claim a fourth successive victory in this Grade One.

The Tattersalls Ireland Champion Novice Hurdle is the other top-class contest on the eight-race card and Pont Alexandre is out to make amends for a disappointing showing in the Neptune at Cheltenham.

Mullins' inmate may appreciate softer ground returning to home soil, but impressive Aintree scorer Ubak and Supreme fourth Un Atout will ensure he doesn't get it all his own way.

The champion trainer has plenty more chances and both Immediate Response and Terminal look potentially well treated in the Aon Novice Handicap Chase.

Quiscover Fontaine and Vesper Bell are his two representatives in the Breakfast With Hector On 2FM Handicap Chase, although Tom Taaffe's Treacle is out to put a disappointing Grand National display behind him.

Waaheb, Un De Sceaux and Cops And Robbers locking horns in the Star Best Racing Coverage Novice Hurdle is another exciting prospect and Robert Tyner will be hoping for a big performance from Cork scorer County Champions in the Irish Thoroughbred Association Fillies Scheme Premier Bumper.

Jane Mangan and Oscar Delta will be out to set the record straight with Salsify in the Racing Post Champion Hunters Chase following a freak incident in the Foxhunter at Cheltenham, while Shin A Vee and Cool Warrior won the KFM Hunters Chase For The Bishopscourt Cup in 2009 and 2010 respectively and they aim to regain their crown when action gets under way at 3.40.