Ada Hegerberg scored her 60th Women’s Champions League goal as Lyon opened their campaign with a nine-goal demolition of Slavia Prague.
Kadidiatou Diani and Vanessa Gilles scored two apiece as their dispirited hosts offered little in response.
Hegerberg’s milestone goal came in only her 62nd Champions League appearance.
The Norwegian became the tournament’s top scorer in 2019 when she broke the previous record of 51 held by Germany’s Anja Mittag.
Sara Dabritz opened the scoring for eight-time champions Lyon inside three minutes before Danielle van de Donk poked in from close range to double their lead in Prague.
Four headed goals before half-time followed – from Gilles, Eugenie le Sommer and Diani’s double – as the Czechs struggled to deal with Lyon’s aerial threat.
After the break, Hegerberg converted from the penalty spot after she was pulled back in the area by Diana Bartovicova.
Amel Majri made it eight with an easy finish from a Van de Donk ball, before Gilles headed in her second with 10 minutes remaining.
“I am really satisfied how we started off, with the result and with the way we performed tonight,” said Sonia Bompastor, head coach of Division 1 Feminine leaders Lyon.
“Maybe we faced a less experienced team, but I am still proud of my side. We kept to our plan and scored a few beautiful goals. Despite the result, there are still things we might improve.”
Lyon, who hold the record for Women’s Champions League titles, next face Austrian side St Polten on 22 November.
In Tuesday’s earlier Group B match, St Polten were beaten 2-1 by Brann on the Norwegian club’s Champions League group stage debut.
After a goalless first half, Rakel Engesvik opened the scoring for Brann before Maria Mikolajova equalised for St Polten with a stunning long-range effort.
Natasha Anasi headed in Brann’s winner 11 minutes from time with her first goal for the club.
Slavia Prague Women
- 12VeseláSubstituted forSlajsováat 45′minutes
- 20BartovicováBooked at 58mins
- 10SurnovskáSubstituted forBendováat 68′minutes
- 15StackpoleSubstituted forNekesaat 69′minutes
- 6KhýrováSubstituted forMorávkováat 45′minutes
- 8RuzickováSubstituted forDivisováat 81′minutes
- 12CarpenterSubstituted forSombathat 60′minutes
- 17van de Donk
- 26HoranSubstituted forMarozsánat 59′minutes
- 8DäbritzSubstituted forBachaat 60′minutes
- 11DianiBooked at 41minsSubstituted forBèchoat 45′minutes
- 9Le SommerSubstituted forMajriat 45′minutes
- 29Mbock Bathy
Match ends, Slavia Prague Women 0, Lyon Féminines 9.
Second Half ends, Slavia Prague Women 0, Lyon Féminines 9.
Foul by Vicki Bècho (Lyon Féminines).
Michelle Xiao (Slavia Prague Women) wins a free kick in the defensive half.
Attempt blocked. Amel Majri (Lyon Féminines) left footed shot from the right side of the box is blocked.
Corner, Lyon Féminines. Conceded by Lucie Bendová.
Delay over. They are ready to continue.
Delay in match because of an injury Wendie Renard (Lyon Féminines).
Foul by Dzsenifer Marozsán (Lyon Féminines).
Franny Cerná (Slavia Prague Women) wins a free kick in the defensive half.
Attempt missed. Perle Morroni (Lyon Féminines) left footed shot from the left side of the box is too high. Assisted by Ada Hegerberg.
Attempt blocked. Daniëlle van de Donk (Lyon Féminines) header from the centre of the box is blocked. Assisted by Alice Sombath with a cross.
Attempt missed. Petra Divisová (Slavia Prague Women) right footed shot from the right side of the box is close, but misses the top right corner. Assisted by Molly McLaughlin.
Foul by Wendie Renard (Lyon Féminines).
Lucie Bendová (Slavia Prague Women) wins a free kick in the defensive half.
Attempt missed. Selma Bacha (Lyon Féminines) left footed shot from the centre of the box is close, but misses to the left. Assisted by Amel Majri.
Attempt blocked. Ada Hegerberg (Lyon Féminines) left footed shot from the centre of the box is blocked.
Substitution, Slavia Prague Women. Petra Divisová replaces Kristyna Ruzicková.
Goal! Slavia Prague Women 0, Lyon Féminines 9. Vanessa Gilles (Lyon Féminines) header from very close range to the centre of the goal. Assisted by Dzsenifer Marozsán with a cross following a corner.
Corner, Lyon Féminines. Conceded by Olivie Lukásová.