Flop: Chelsea's crossing
Tammy Abraham already has 7 goals for Chelsea in the Premier League, all of them coming in the last three games. At least three of those goals were direct results of good crosses that he was able to get on the end of and beat both his marker and the goalkeeper to finish the opportunity.
The difference in this game was that Chelsea's crossing was abysmal. They couldn't find Abraham consistently. Even when Lampard changed tack and brought on Giroud to play alongside Tammy and provide more of a threat in the middle, no cross could find them.
The prime culprits were Marcos Alonso and Cesar Azpilicueta who maybe had two good crosses between them all game. Pedro and Willian attempted a few towards the end of the game as well but none were effective until Willian's corner found Tomori, who in turn won a penalty.
For a side that wants to have any hope to qualify for the knockout stages, they will need to improve on their delivery from wider areas.