Cause Of Causes made light work of very testing conditions to give Ireland victory in The Ladbroke at Ascot.
The Gordon Elliott-trained four-year-old sprouted wings between the last two flights, as gallant top-weight Petit Robin appeared as if he had done enough.
Davy Condon's mount looked as if he had just joined in and rattled past Nicky Henderson's runner after the last, winning by four lengths from his fellow 25-1 chance.
Elliott said: "We were worried about the ground, but we thought he had a right chance if he did handle it.
"We brought him over a couple of days earlier as he's not a great traveller. The lads have worked with him at home and everyone has done a great job with him.
"We're not bothered what the handicapper does now as this was a good pot. He's a gentleman of a horse to deal with and it's nice to win a high-profile race.
"He could maybe go for the Betfair Hurdle at Newbury and could even be a horse for something like the Ebor in the summer."
Condon, who was given a four-day whip ban (January 6-9), added: "He wouldn't be in love with that ground but he had to go through it like the rest of them.
"He's so genuine and when I pulled out wide up the straight he flew. I was struggling turning in but when I pulled him out, he took off. I thought at the second-last I would win.
"He deserved a big one. He's been second in a Galway Hurdle and third in the Greatwood."
25 October 2014Steip shock as Ship sinks
Blaklion sounds War cry
Trophy proves a stroll in Park
Roan reward at last for Wishfull
Muir full of praise for Code
Hawk swoops for Aintree prize
Smaih shines for Hannon
McCoy delighted with World hero
PJA and BHA issue fraud warning
'Enigma' Seanie ready for Knockaire
Prendergast duo set Eyrefield poser
Tac takes aim at Royal-Oak double
Snoano stepping up for Trophy bid
Adelaide rules in Cox Plate
Sir Max clinches Mercury gold
Full marks for Bangor schooling
Milky Way on another planet
O'Brien targets another Trophy
Hurricane in hat for Morgiana
Buick happy as a Star is born
King ace back in the Old routine
McCoy makes Chepstow return
Botti seeking Astrelle celebration
24 October 2014Ballyalton out for the season
Hutchinson sits out weekend action
Balding sweet on Park chance
Walker hoping for Glorious victory
Times out to make Newbury headlines
Cheltenham honour leading figures
Moore keen on Adelaide chance
Stevens back for Breeders'
Johnson Houghton fined
Duke lords it at Carlisle
Southwell first for O'Brien
Fenton fined over steroids
Buywise on the money at Ludlow
Lockinge the big plan for Toormore
Stone ruled out of Old Roan
Wetherby likely for First run
Elm tops Trophy octet
23 October 2014Fenton guilty of drugs possession
Williams hoping for Max power
Harty biding his time with Lane
Clonmel aim for Baily
Jezki possible for Morgiana bow
Harrington expects Naylor to shine
Gosden a Fan of Newmarket scorer
Northern aces face off in Cumbria
Murphy plagued by shoulder injury
Dynaste charts direct Haydock route
O'Brien outlines Breeders' plans
Wetherby-bound Taquin to duck Power
High hopes for Adelaide run
Gilgamboa waits on ground
Dandino misses Cup date
22 October 2014December date for Balding memorial
Deputy outgunned at Fontwell
Whisky chasing Power spoils
Burke maps out Odeliz targets
Present sights set on Power prize
New category for all-weather champs
Moviesta has sales date
National aim for O'Neill star
Cheltenham on Ginge agenda
Lewis eyeing Dubai success
Henderson handed Ascot role
Panther given Breeders' go-ahead
Plain sailing for perfect Storm
Big Easy sets sail for Open fixture
Hall monitored for Giant Bolster
Stomachion in November frame
Hughes revels in 'sweet' success
BHA moves to address small fields
Connell turns to Heskin
Integral to race on next year