Joyful Dribbler set the standard in the heats of the Gain Dog Food Corn Cuchulainn over 750 yards at Harolds Cross on Friday.

Sean Dowling’s runner led off the last turn to hold Pat Dalton’s Tradition by four and a half lengths in 42.20sec.

Ester Kiely’s Shaneboy Sue got up close home in heat two to deny long-time leader Razldazl Rubin by a head in 42.23sec.

James Robinson’s Uncle Paul made all in heat three to hold Group Rebel by three quarters of a length in 42.70sec.

McCalmont Cup runner-up Karlow Master led from trap to line in heat four to hold Barrys Tea winner Fire Height Amy by a neck in 42.45sec.

Keith Mason’s Strong Backs landed a scrappy heat five in 43.48sec.