Willian scored two goals from the run of play and drew a pair of penalties in Azerbaijan, as Chelsea beat 10-man Qarabag 4-0 on Wednesday.
His second goal was a fantastic thump from atop the arc, and further iced the result in the 85th minute.
Qarabag hung tough for the first 20 minutes, but saw its odds of getting a point take a hit with a penalty and red card.
Rashad Sadygov made contact with Willian inside the 18, and Portuguese referee Manuel de Sousa awarded a penalty. That was understandable, but surprisingly he produced his red card to send Qarabag down a man.
Eden Hazard converted his low penalty, wrong footing keeper Ibrahim Sehic, and Chelsea took a 1-0 lead in the 21st minute.
Willian would score a goal of his own in the 36th, part of a terrific team goal with Hazard and Pedro.
The Blues were largely content to let Qarabag have the ball early in the second half, but resumed control around the hour mark and Sehic made an outstanding stop on Hazard before substitute Alvaro Morata dragged a shot wide of the far post.
Willian drew a second penalty in the 71st minute, as Maksim Medvedev tugged on the Brazilian’s jersey on a dribble into the 18. Yellow card for this foul.
Cesc Fabregas scored but two Chelsea players infringed on the 18 thanks to the shooter’s stuttering — and stopping — PK. He finished the second as well as the first. 3-0.
Willian added the fourth with a vicious strike five minutes from the end of scheduled play.