Wigan Athletic 1 Manchester City 0: Pep Guardiola’s City knocked Out of FA Cup

It is hard to quantify what constitutes the biggest cup upset, but this has to rank among them. It even has the right to be debated as the greatest ever, given what a brilliant team Manchester City are, how they have dominated and where Wigan are right now.

Will Grigg steers in the winner for Wigan against Manchester City CREDIT: MARTIN RICKETT/PA

Manchester City’s hopes of an unprecedented quadruple have gone up in flames.

“Will Grigg’s on fire,” was the anthem of Northern Ireland’s Euro 2016 campaign, but the striker did not feature for his country during that tournament. His contribution for Wigan, though, was immense.

Just as extraordinary as the result was the nature of his goal, with Manchester City substitute Kyle Walker allowing the ball to run under his foot, as Callum Elder played it down the line, without realising Grigg was behind him.

Suddenly the forward was in a foot race with Walker and somehow he held him off until he got close enough to goal to shoot. Even then he fell as he did so, but found the angle to send the ball around Claudio Bravo and into the net.

Cook had joked that a 1-0 result would seal his genius and Wigan achieved just that as they repeated the scoreline when these two sides met in the final of this competition in 2013. A cardboard sign made by a young fan had listed the transfer fees of some City players – Kevin De Bruyne, Walker etc – but said Wigan’s greatest day, winning that final, was “priceless”.

Manchester City dominated, even when down to 10 men, and it felt like the second half was played in the Wigan penalty area.

Before that, Delph had been sent off as he tried to win the ball back by launching himself at midfielder Max Power.

Fabian Delph was sent off for a sliding foul on Max Power CREDIT: MARTIN RICKETT/PA

Some Wigan fans came on to the pitch and one said something to Sergio Aguero, clearly, who flicked back with his hand.

In the end, a memorable FA cup night with William Grigg’s 79th minute goal changing everything.