Chelsea goalkeeper Edouard Mendy produced an absolute howler of a mistake to gift Leeds the lead at Elland Road this afternoon.
Thiago Silva played the ball back to the Senegalese shotstopper but he was guilty of overplaying in the wrong area at the wrong time.
His touch was off and just as he attempted a Cruyff turn, Leeds' summer signing Brenden Aaronson was on it like a flash, dispossessing Mendy and tapping in the net for his first goal in the Premier League.
Thomas Tuchel must have been fuming by the manner in which his side conceded and it got worse for the Blues, who found themselves 2-0 down shortly after when Rodrigo Moreno headed home from a Jack Harrison free-kick.
Mendy has made this type of error before, notably making a monumental gaffe in the Champions League quarter-final against Real Madrid at Stamford Bridge last season.
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Karim Benzema capitalised and scored the most simple of his three goals on the night. Tuchel backed his goalkeeper at the time, saying: "In any match it is bad timing to do a mistake like this but in a quarter-final, an occasion like this against Real Madrid is one of the worst moments you can do it.
"It is so obvious. I hope it does not affect his self-confidence too much. This is what goalkeeping is also about, to accept mistakes and live with his mistakes and go back and help your team with performance, focus, re-focus, stay calm, stay confident.
"This is normally what goalkeepers, what Edou is made of. Now he can prove he is a true champion.”
Topics: Edouard Mendy, Chelsea, Leeds United