Things have been going quite well at Manchester City this season.

Pep Guardiola's side have all but swept up the Premier League title already and have done it in an eye-catching style that arguably hasn't been seen before in England.

They've already lifted the League Cup after a comfortable 3-0 win over Arsenal at Wembley, and their Champions League dream is still firmly on after reaching the quarter-final stage.

They'll meet Liverpool in the last eight - possibly the team they wanted least after the Reds' high-intensity attack handed them their sole defeat this season, in the Premier League at least.

Not counting a couple of dead-rubbers in the Champions League against Shakhtar and Basel, only one other side has managed to upset the rampant City this year: Wigan Athletic.

Yes, League One Wigan are the sole reason that Guardiola isn't chasing a historic quadruple in his second season at the Etihad after Will Grigg scored a 79th-minute winner to knock City out of the FA Cup fifth-round.

It's still barely believable that it happened and according to Grigg, City didn't take the shattering of their history-making dreams lightly.

In an interview with The Times ahead of Wigan's sixth-round clash with Southampton on Sunday, Grigg explained that he attempted to get Sergio Aguero's shirt after the game.

Things didn't quite go to plan.

"I don’t think City were best pleased they’d lost," he said. "They were coming to our place expecting to win.

"Things got heated [at half-time] but they were fine afterwards, they were respectful. I tried to get Sergio Agüero’s shirt.

"They have some security so it was hard to get in with them. I spoke to someone outside and he went in."

But City don't appear to have been in a shirt-giving mood; the guy never returned and Grigg left without the Argentine's shirt.

“They were quite busy,” Grigg said. “They were concentrated on getting sorted to leave.”

So the striker had to settle for the winning goal in what is certainly the biggest upset of the season.

So far, at least - after beating City, you could hardly blame Wigan for maybe wondering if they could even outperform their own 2013 heroics and go all the way.

“At the start of the season our sole aim was promotion and still is," Grigg explained. "But, when you start playing in the cup, you sense the taste for an upset, for success, and as soon as we beat that first Premier League team [Bournemouth in the third round] you saw the belief in the side."

City might not be making history this season, but there's still time for Wigan to.