Manchester City’s hopes of winning quadruple has been blown apart by League One side, Wigan Athletic with a stunning upset in their FA Cup fifth-round tie.
City had lost just once against English opposition all season: the 4-3 defeat at title rivals Liverpool. But no-one gave Wigan, second in League One and more focused on securing promotion back to the Championship, much of a chance.
However, they had a real opportunity for a shock when City were reduced to 10 men as Fabian Delph was controversially sent off for a high challenge on Max Power.
City have a 16-point lead at the top of the Premier League and are virtually guaranteed a place in the Champions League quarter-finals, with the Carabao Cup final against Arsenal on Sunday.
The striker’s low finish capped a night of drama at the DW Stadium, with City’s Fernandinho wasting a fine chance shortly before Delph was dismissed for a heavy challenge on Max Power.
The incident led to a heated argument between City boss Pep Guardiola and opposite number Paul Cook in the tunnel at half-time.
And there were unedifying scenes at full-time, too, with City striker Sergio Aguero involved in an altercation with one of the many home fans who invaded the pitch.
City threw everything at their hosts both before and after Grigg’s goal – a guided shot from 20 yards – and Danilo’s header was gratefully held by Christian Walton in the game’s final attack.
Guardiola had given Ederson, Raheem Sterling and Nicolás Otamendi the night off, with Kevin De Bruyne restricted to a substitute’s appearance, but City still had enough mega-money signings on the pitch to have done much better.
The 79th-minute goal stunned City, who were unable to create a killer chance to rescue their hopes of winning every competition this season. Guardiola even threw on Kevin De Bruyne for the closing stages but brilliant Wigan held firm to cause one of the greatest FA Cup upsets of recent years.
Wigan’s FA Cup final triumph over City five years ago will still be the greatest day in the club’s history but the win over Pep Guardiola’s side may be the greatest result in the club’s history and their fans were quick to flood the pitch at full-time to celebrate.