Wigan manager Paul Cook said he had to ‘shut his eyes and pray’ as his League One side ended Manchester City’s hopes of winning the Quadruple by beating them 1-0 in the FA Cup fifth round.
Will Grigg netted the only goal with 11 minutes left as the Latics repeated their win over City in the 2013 final.
The Premier League leaders had Fabian Delph sent off just before half-time.
“It feels great. It is such a severe test. They are such a strong side. We rode our luck at times,” said Cook.
Speaking to BBC One, he added: “Our lads deserve credit for their work. Some of the blocks they made were outstanding and to beat Man City you have to do that.”
City were reduced to 10 men in added time at the end of the first half.
Delph was shown the second red card of his career after sliding in for a 50-50 ball with Max Power. The challenge was robust but did not appear malicious, and it sparked a heated discussion between Cook and City counterpart Pep Guardiola.
Match of the Day pundit Jermaine Jenas said the decision was “strange”.