Millwall manager Neil Harris admits he was not surprised his League One side beat Leicester in the FA Cup on Saturday.
The south London club are through to the last eight after Shaun Cummings scored a 90th-minute winner to heap more pressure on Leicester manager Claudio Ranieri and his beleaguered side.
Millwall were reduced to 10 men for much of the second half after Jake Cooper was dismissed for his second bookable offence following a rash tackle on Ahmed Musa.
But the deficit only sought to galvanise the League One club, with Cummings cooly scoring the winner in the closing stages of the game.