Toner D'Oudairies successfully conceded weight all round in the Martin Reilly Motors Hyundai i40 Chase at Sligo.
Gordon Elliott's gelding had to give 4lb to Go Al The Way, who boasts a higher official rating, and was sent off at 7/4 behind the odds-on favourite.
The pair had it between them from three fences out, but a slicker leap carried Toner D'Oudairies into the lead and he didn't need too much assistance from Davy Russell in the saddle to ease across the line with four lengths in hand.
The winning jockey said: "That's his level and all credit to Gordon who has placed him well."
Russell was bidding to follow up on Kandinski in the Sligo IT Student Day At Sligo Races Beginners Chase and looked like doing so as he approached the final fence full of running.
But he found less than expected when Russell asked, whereas 7-1 shot Coolking responded to all of Bryan Cooper's urgings and got up by two and three-quarter lengths.
Coolking's trainer Dessie Hughes had to settle for second when his Giantofaman looked far from straightforward in finishing second behind the Nina Carberry-ridden Onwiththeparty (100/30) in the Why Not Sponsor A Race At Sligo Racecourse In 2014 INH Flat Race.
Whosaidso had been off the track since finishing third at Cork in April, but he returned at the peak of his powers and accounted for Pocketfullapennies by four lengths in the St Angela's College Sligo Student Day At Sligo Races Handicap Chase.