Zenit St Petersburg and RB Leipzig meet in Russia tonight as the race for a place in the Champions League knockout stages heats up.
Having been drawn together in Group G against Lyon and Benfica, Leipzig and Zenit sit first and second respectively in what each of the four sides will have considered a winnable table.
Despite Benfica losing two of their three opening games, results elsewhere mean they are just three points off leaders Leipzig - and that means the whole complexion of the group can swing on matchday four.
Leipzig earned a valuable 2-1 victory over Zenit on matchday three, and Julian Nagelsmann's team head to Saint Petersburg seeking a similar result which would stand them in good stead for reaching the last-16.
Another defeat would not be fatal for Zenit, but it would leave Sergei Semak's side with a lot of work to do in the two remaining games.
Champions League preview
Zenit vs RB Leipzig
Venue: Krestovsky Stadium
Kick-off time: 5:55pm GMT, Tuesday November 5
Here's how to follow the action tonight...
TV channel and live stream information
The match will be televised live on BT Sport ESPN and can be streamed live online via the video player and the BT Sport app, with kick-off scheduled for 5:55pm.
You can follow all the action and analysis on Standard Sport's LIVE blog.
Prediction: Zenit 1-1 RB Leipzig
Leipzig edged this fixture in Germany with a 2-1 win, and it should be another tight contest in Russia. Expect a tense draw.
Team news
Zenit XI: Kerzhakov, Smolnikov, Osorio, Ivanovic, Rakitskiy, Barrios, Ozdoev, Douglas Santos, Erokhin, Dzyuba, Azmoun
Subs: Driussi, Kuzyaev, Karavaev, Shatov, Zhirkov, Mak, Vasyutin
RB Leipzig IX: Gulacsi, Mukiele, Klostermann, Upamecano, Halstenberg, Demme, Laimer, Sabitzer, Forsberg, Nkunku, Poulsen
Subs: Haidara, Werner, Lookman, Matheus Cunha, Ampadu, Mvogo, Kampl
Referee: Orel Grinfeld
