In a frantic FA Cup quarter-final at the Etihad stadium, holders Wigan Athletic pulled off a huge upset by beating Manchester City 2-1, in a repeat of last year's final.
A Jordi Gomez penalty and James Perch's simple finish were enough to see the away side through, despite Samir Nasri pulling one back for the visitors.
Before the game, confidence was high in the City camp, having won the League Cup final at Wembley last weekend. Key players such as Joe Hart, Vincent Kompany and David Silva were left on the bench, while Manuel Pellegrini's dress reflected his pre-match mood; he looked relaxed and casual.
However, despite his side's early dominance, City could barely muster a shot on target, and Wigan took the lead after 27 minutes. Marc-Antoine Fortune, who had already looked a handful, twisted and turned past the hapless Martin Demichelis, who brought the striker down, leaving referee Anthony Taylor no choice but to point to the spot.
Jordi Gomez stepped up confidently and placed his penalty well past the diving Costel Pantilimon to send the away fans into raptures. The rest of the half was not much better for City, would had only one shot on target before the interval, with Uwe Rosler's 5-4-1 formation reaping dividends.
After the interval, Wigan scored a shock second goal just over a minute after the restart. Gael Clichy's defending was slack from James McArthur's cross, and James Perch applied a simple finish at the back post.
Manuel Pellegrini took immediate action, making a triple substitution which saw Yaya Toure, Jesus Navas and Alvaro Negredo replaced by David Silva, Edin Dzeko and James Milner. City instantly looked a better side, with Dzeko heading against the post and Aguero forcing a good save from former England keeper Scott Carson.
And after Emmerson Boyce headed a corner away to Micah Richards, he nodded one down into the path of Samir Nasri who thumped a fine strike past Carson; the goal stood despite Wigan's appeals of offside against Joleon Lescott.
The home fans roared on their side, but to no avail. Wigan's defence stood firm, with Boyce making a fine tackle to deny Dzeko a certain goal and Carson again making good saves from Aguero.
Costel Pantilimon rushed forward for a late corner, but City could still find no way past a stoic, resolute Wigan, who will face Arsenal in the semi-final at Wembley.
Uwe Rosler's return to the Etihad was a very memorable one, and this was a day that no Wigan fan will be able to forget in a hurry.
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