A lucky punter pocketed over £31,000 with a sensational 12-fold accumulator - after three last-minute winners.
The unnamed customer put £2 on the monster selection from games across England and Spain on Wednesday night.
He needed some last-gasp intervention to ensure the blockbuster win, which was kicked off by Raheem Sterling's added time winner for Manchester City against Southampton.
In Spain, there was even more drama - none more so than in San Sebastian where Real Sociedad hosted third tier Lleida Esportiu.
Lleida went into the clash at 11/1 - but that price drifted out to 150/1 when they fell 2-0 down.
The minnows fought back and secured a famous victory thanks to an 89th minute winner.
Their league rivals Formentera also delivered an upset away at Athletic Bilbao, priced at 20/1 before the game.
Alex Apati of Ladbrokes said: "It's always great to see a huge outsider win in the cup - this punter backed two. It's always great when your bet is completed by a last minute winner - this punter relied on three.
"The customer in question has shown us all how it's done, and we're taking our hats off to him today."
Betslip
Manchester City 2-1 Southampton ( Man City - 1/5)
FC Barcelona 5-0 Real Murcia CF ( Barcelona - 1/14)
Las Palmas 2-3 Deportivo La Coruna ( Deportivo La Coruna - 7/4)
Atletico Madrid 3-0 Elche CF ( Atletico Madrid - 1/10)
Sevilla 4-0 FC Cartagena (Sevilla - 1/20)
Athletic Bilbao 0-1 SD Formentera (SD Formentera - 20/1)
Real Sociedad 2-3 Lleida Esportiu ( Lleida Esportiu - 11/1)
Arsenal 5-0 Huddersfield Town ( Arsenal - 2/11)
Bournemouth 1-2 Burnley (Burnley - 13/5)
Chelsea 1-0 Swansea City ( Chelsea - 1/7)
Everton 4-0 West Ham Utd ( Everton - 6/5)
Stoke City 0-3 Liverpool ( Liverpool - 4/9)