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+.

Just Women’s Sports is here with your daily World Cup Digest, breaking down all of the biggest storylines from each day of action in Australia and New Zealand.

Today’s top World Cup news: Close games highlight group play

With the Women’s World Cup field expanding from 24 teams to 32 ahead of this year’s tournament, some people questioned whether the inclusion of less experienced teams would result in huge, lopsided wins (à la the USWNT defeating Thailand 13-0 in 2019).

But after three days of competition in Australia and New Zealand, that concern hasn’t panned out. Five of the eight nations making their World Cup debut this year have played so far (Ireland, Zambia, Haiti, Vietnam and the Philippines), with only one of those games coming close to “blowout” status: Japan’s 5-0 win over Zambia on Saturday.

Ireland managed a 1-0 loss to host nation Australia, the Philippines lost 2-0 to Switzerland, Vietnam conceded just three goals to the top-ranked USWNT, and No. 53 Haiti held No. 4 England to a 1-0 result.

Ahead of the U.S.-Vietnam matchup, American captain Lindsey Horan was asked if the USWNT was going to “crush” Vietnam, like her team’s 13-0 result vs. Thailand four years ago.

“There are not easy games that before you were just like, oh, this is going to be 6-0, 7-0 or whatever,” Horan said. “It’s not how it is anymore.”

Haiti’s World Cup debut against England, the 2022 Euros champions, was an especially close game. England’s only goal came in the 29th minute after a VAR review showed the ball grazed the fingertips of Haiti’s Batcheba Louis inside the box. Georgia Stanway took the penalty and Haitian goalkeeper Kerly Théus initially pulled off a dramatic save — but was called for encroachment as she left the line before Stanway made contact with the ball. The penalty was re-awarded, and this time, Stanway found the back of the net.

While England controlled 75% of the possession throughout the match, Theus made one save after another to keep her team in the game. Haiti nearly found the equalizer in the 81st minute, with Haitian forward Roseline Eloissant forcing English goalkeeper Mary Earps to make a sprawling save.

Haitian midfielder Melchie Dumornay, 19, was especially impressive in her World Cup debut. The rising star is set to join club team Lyon after the World Cup concludes.

Today’s World Cup results

  • United States 3, Vietnam 0
  • Japan 5, Zambia 0
  • England 1, Haiti 0
  • Denmark 1, China 0

More World Cup news

  • ICYMI: The USWNT, the two-time defending World Cup champs, opened its title defense with a 3-0 win over Vietnam. Sophia Smith notched a historic brace in her World Cup debut.
  • Denmark — competing in its first Women’s World Cup in 16 years — defeated China 1-0 to join England at the top of Group D. Danish substitute Amalie Vangsgaard notched the game-winner in the 89th minute, her bouncing header sneaking past Chinese keeper Xu Huan.
  • Japan defeated Zambia 5-0, with a brace from Hinata Miyazawa. Zambian star Barbra Banda found herself marked by three Japanese defenders for much of the game, a tactic that paid off.