#3 David Luiz

Chelsea were made to work hard against a well-drilled Newcastle side, who defended with ten men at the back. After a long wait of 76 minutes, Eden Hazard converted a spot-kick to give his side the lead.
David Luiz's horrendous mistake then put Newcastle back on level terms with the Blues. Yedlin had apparently elbowed Giroud before crossing the ball to Joselu, but instead of playing for the referee's whistle, the entire Chelsea defence switched off.
Despite being in the middle of the six-yard box, Joselu attacked the cross all the way to the near post area and beat Luiz to score the header. The Brazilian stood still and ball-watched carelessly.
Had the visitors not scored again, it would have been one of the toughest days in the office for Maurizio Sarri - primarily due to David Luiz's error.