OL Lyonnes scored some UEFA Champions League revenge on Tuesday, upending reigning UWCL champs Arsenal 2-1 in the powerhouse pair's 2025/26 league phase opener in London.
In a rematch of last season's Champions League semifinal, Haiti international Melchie Dumornay sealed the OL Lyonnes result with a first-half brace for the French titans, quickly countering Arsenal forward Alessia Russo's seventh-minute strike.
"Errors happen from time to time, but if they happen too often, of course, there's something there," noted Arsenal head coach Renée Slegers, referencing the defensive mistakes that led to both OL Lyonnes goals. "Sometimes it's intangible or hard to put your finger on because it's a mixture of things."
"We won't get too high [or] too low in this situation," the Gunners manager continued, adding "the team went through hard times last year as well, and then we ended the season on a high with an amazing achievement in the Champions League."
OL Lyonnes weren't the only opening-day league phase victors, as Juventus took down Benfica 2-1 while 2024/25 runners-up Barcelona demolished Bundesliga side Bayern Munich 7-1 behind a pair of braces from attackers Ewa Pajor and Clàudia Pina.
Unlike previous iterations, the 2025/26 Champions League format does not include first-round rematches, with each team facing six different opponents before advancing to the knockouts.
How to watch 2025/26 Champions League games
UWCL league phase opening matches conclude with five games on Wednesday, with WSL winners Chelsea FC kicking off the action against Dutch side FC Twente at 12:45 PM ET.
All 2025/26 Champions League matches will air live on Paramount+.