Kiev need nine now. Ten minutes left.

Dynamo Kiev need a goal every two minutes now.

Willian is offered an orange energy drink and bottle of water as he sits down on the bench. Proper butler service. He turns them both down.

Chelsea bring on Pedro, who scored in the first leg, for Willian, who scored in the first leg.

Cesar Azpilicueta picks up an early yellow card for pulling back the shirt of Sidcley.

Free-kick to Chelsea, 30 yards out. Marcos Alonso and Willian both have strong claims for this. The keeper has no idea who's going to take it...

Alonso steps up but curls his effort wide.

Akorede Khameel: Brilliant hat-trick, saw it coming.

Donald: Easy night for Chelsea. Giroud will be glad with his first hat trick as a Chelsea player.

Image source, Reuters

Europa League top goalscorer Olivier Giroud, with nine, is the first player to score a perfect hat-trick (left foot, right foot and header) in the competition this season.

It's still very tight in Russia as one goal from Krasnodar will send them through to the quarter-finals thanks to their away goal in Valencia. Still goalless in this second leg though.

Red Bull Salzburg have grabbed another goal against Napoli via Fredrik Gulbrandsen, meaning they lead 2-1. But they still need another two goals to go through as the Italian side lead 4-2 on aggregate and have the away goal advantage.

Image source, EPA

Davide Zappacosta limps off and on comes Cesar Azpilicueta.

Pedro had been warming up before Maurizio Sarri was forced into this switch.

Denys Harmash heads over from near the penalty spot for Dynamo Kiev. Chelsea defender Davide Zappacosta is down holding his leg.

This was Olivier Giroud's second European hat-trick after scoring three against Olympiakos for Arsenal in a Champions League match in December 2015.

YESS. Here comes brilliantly named Brazilian Tche Tche for Dynamo Kiev. Off comes Serhiy Sydorchuk.

Chelsea make a change too as Jorginho replaces N'Golo Kante.

Willian has taken about one million great free-kicks and corners today. This one finds Antonio Rudiger, whose effort is saved from close in.

Lee Sykes: Is it time for the Barkley/Kovacic change yet?

Image source, Getty Images

Chelsea so close to a fifth. It's a brilliant 25-yard rocket of a free-kick from Marcos Alonso, which produces an equally good save by Denys Boyko to dive and tip it onto the post.

Kiev need eight goals now in 29 minutes. One every three minutes and they'll be fine.

This could get messy. It's a good surging run from Callum Hudson-Odoi and Vitaliy Mykolenko has to hack him down to stop him. Yellow card.