The goal they will talk about for many years in his corner of East London and which will take its place in the rich history of Leyton Orient is not the winner scored by Kevin de Bruyne.
It was not even scored by an Orient player. It is the own goal by Stefan Ortega in the first half after a wonderful 50-yard effort by Jamie Donley had crashed into bar, hit the Manchester City goalkeeper as he back-pedalled into panic and settled into the net.
That was the goal to light up another FA Cup weekend and send them dancing in celebration on the balconies of the flats overlooking Brisbane Road, which these days goes by the name of the Gaughan Group Stadium.