#2 Worst: David Luiz
David Luiz and Antonio Rudiger were rather untested at the back for most part of the game. However, the difference between their performances was that the latter stood up to the task and replied authoritatively whenever called upon, while Luiz didn't do the same.
Luiz was the worst player of this fixture only because Joselu's goal was completely his fault. When Giroud was not given a free-kick for an apparent raise of elbow by Yedlin, the defender stood static instead of playing for the referee's whistle.
The cross was then whipped in and Luiz was favourite to get there as it was straight to his path. But unfortunately for him and Chelsea, Joselu, who was a good six yards behind the Brazilian, ended up winning the header and burying it into Kepa's goal.
Luiz completely switched off, which is quite unprofessional.