[1] In the ante post betting the relatively inexperienced Irish pair of Coolavanny Calvn and Part Blake headed the field, closely followed by defending champion Thorn Falcon.
Skywalker Barry (Gold Cup and Select Stakes champion) impressed for the Irish, winning in a time of 29.09 and defeating 2021 Derby finalist Ballymac Fairone.
John Mullins scored a quickfire double with Swift Iconic and Signet Goofy before the strongest heat of the round saw Ballinabola Ed defeat Bockos Belly in a very fast 29.07.
The third round began to define where the title might go and on a slow track Kilkenny Santy (29.60), Ballymac Fairone (29.54) and Signet Goofy (29.55) claimed victories before Singalong Sally recorded a faster 29.34 in a heat that saw the elimination of the defending champion Thorn Falcon.
The Hennessy trained runner had not been at his best in the competition but was coming right and won by over six lengths in defeating Kildare and Coppice Fox but Signet Ace failed to progress.
The night got better for Hennessy when Hello Hammond claimed heat two at odds of 14/1, while two major contenders Ballinabola Ed and Ballymac Fairone were both eliminated.
The final heat went to John Mullins' Signet Goofy in 29.21, meaning that the brindle dog was the only remaining unbeaten greyhound in the competition.
Graham Holland's Romeo Magico completed an impressive win from outsider Mickys Barratt, who tracked the winner home.