Sweeney Tunes capitalised on a terrible mistake three out by 4-7 favourite Mikael D'Haguenet to lift the Woodlands Park 100 Club Nas Na Riogh Novice Chase at Naas.
The Willie Mullins-trained Mikael D'Haguenet looked to be going ominously well when his blunder took him from first to last in the Grade Two contest.
Davy Russell needed no further prompting on the Paul Nolan-trained Sweeney Tunes (3-1) and set sail for home, holding the challenge of Charlie's Vic, who came from the rear of the field, by three and a half lengths.
Mikael D'Haguenet, who had been completely stopped in his tracks, remarkably rallied to get third.
Nolan said: "It's nice to win these Grade Two races, but at the end of the day Mikael D'Haguenet looked like he would have sluiced in.
"He's entered in the Pulteney Land Investments Novices' Handicap Chase at Cheltenham, but he was given a mark over 140 so he's not eligible for that.
"He's in some of the open handicaps at Cheltenham, but running this close to the Festival is not ideal so we might look at the Irish National instead."
Russell doubled up when bossing the Paddy Power Mobile App Handicap Hurdle from the front on Tim Doyle's well-backed Mallowney (11-4), who cleared right away in the straight to score by seven lengths.
"He ran very well in the Boylesports Hurdle (at Leopardstown last month) and only for a mistake at the last he would have been placed," said Doyle.
"We won't be too hard on him this season and I'm really looking forward to going chasing with him in the autumn. He should make a smashing chaser. He's got a lovely pedigree and is from the same family as Boston Bob. He's only really started to mature into a good horse recently."
1 October 2014Tapestry enters Arc picture
Dettori vies for World rule in Arc
Toocool has American dream
Berkshire on the comeback trail
Dettori given Ruler role
Estidhkaar 'on target' for Dewhurst
Australia leads Champions acceptors
Martin outlines Jack ground hopes
Raiding party heads Opera runners
Autumn aim for North
Shamkala sole Arc withdrawal
Force and Power top Abbaye list
Cadeaux team mull Caulfield date
Limato set for Redcar speed test
Cape set for Concorde test
Telescope sights set on Breeders'
Power primed to storm Abbaye
Creepy excels on chasing bow
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Buick makes Ivanhowe Arc link
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Cirrus heads Longchamp billing
Elite aim for Irving
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Beaux plans undecided
Foret-bound Byron enjoys workout
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Ted takes Roscommon honours
Rain fillip for Treve Arc challenge
Speed not an issue to River camp
Signal on course to Wow in Paris
Ivawood heads Millions field
Top fillies star in Chariot race
Point primed for Abbaye assignment
29 September 2014Logic ruled out for the season
Ansgar in Foret frame
Kalann team consider Champions bid
Peslier and Mosse hunt Arc mounts
O'Brien trio set for Longchamp
High hopes for Elliott team
Berry takes the rails route
River cruises to Beresford glory
Qualify swoops for O'Brien team
Minstrel ready for chasing bow
Tiggy Abbaye run not set in stone
Angel camp ponder Darley raid
Pineau ripe for new season
Mubtaghaa suited by joy of six
Fiesolana fired up for Foret
28 September 2014Keighley holds Court for Cheltenham
Mart makes Newland's day
Spin does the trick at Ripon
Angel heaven-sent for Tregoning
Tiggy takes Cheveley gold
Lodge proves a stroll in Park
Rosalie blossoms for hat-trick
Naylor seeking Paris prize
Integral on course for Chariot
Dettori anticipating 'vintage' Arc