A brace from Alex Oxlade-Chamberlain in his first Champions League game in 18 months helped Liverpool to victory last night.
Jurgen Klopp's side beat Belgian champions Genk 4-1 in Group E, with Sadio Mané and Mo Salah also on the score-sheet.
Chelsea were 1-nil winners away to last season's semi-finalists Ajax.
A late strike from Michy Batshuayi earned all three Group H points for Frank Lampard's side.
🔴 Liverpool have now won 25 of their last 30 matches in all competitions (W25 D3 L2)...
🤔 Holders going all the way again? #UCL pic.twitter.com/8VpvLwOwNz— UEFA Champions League (@ChampionsLeague) October 23, 2019
There's Europa League action this evening across the continent.
Manchester United will be hoping to gather momentum when they travel to Partizan Belgrade at 5.55pm in Group L.
Unai Emery's Arsenal welcome Portuguese opposition to the Emirates.
Vitoria Guimarães are the visitors in Group F at 8pm.
💬 "Sure, you've seen me play, but you probably don't know much about me...
"The most important thing? I always give my best, my maximum. I always play with my heart."
This is a top read from Gabi ❤️— Arsenal (@Arsenal) October 23, 2019
Meanwhile Celtic face Lazio in Group E - that one is underway at Celtic Park from 8pm.
There's a 5.55pm kick-off for Wolves' away trip to Slovan Bratislava.
Steven Gerrard's Rangers take on Porto away with the same start time.