The 2019/20 UEFA Champions League group stage begins with matchday one this week,with all 32 teams in action.
Liverpool travels to Napoli as they begin their Champions League campaign and Barcelona visits Borussia Dortmund,while last season's surprise semifinalist Ajax are also in action, playing Lille at home.
UEFA Champions League Fixtures Tonight:
Napoli vs. Liverpool.
Inter Milan vs.Slavia Prague.
Lyon vs. Zenit St. Petersburg.
Ajax vs. Lille.
Benfica vs. RB Leipzig.
Borussia Dortmund vs. Barcelona.
Chelsea vs. Valencia.
Red Bull Salzburg vs. Genk.
Wednesday brings another eight fixtures:
Club Brugge vs. Galatasaray.
Olympiakos vs. Tottenham Hotspur.
Dinamo Zagreb vs.Atalanta.
Athletico Madrid vs. Juventus.
Bayer Leverkusen vs. Locomotiv Moscow.
Shakhtar Donetsk vs. Manchester City.
Paris Saint-Germain vs. Real Madrid.
Bayern Munich vs. Red Star Belgrade.
The opening round of fixtures in this season's Uefa Champions League group stage on Tuesday and Wednesday (all kick-offs 9pm unless stated).