Arsenal celebrated ending their six-year absence from the UEFA Champions League with an impressive 4-0 win at home to PSV Eindhoven, but Manchester United suffered another defeat as they were beaten 4-3 at Bayern Munich.
Goals from Bukayo Saka, Leandro Trossard, Gabriel Jesus and Martin Odegaard sent Arsenal on their way to their biggest opening-match win in the competition in 13 years.
How the match unfolded
Playing in the tournament for the first time since March 2017, Arsenal made a dream start at Emirates Stadium as Saka finished from close range in just the eighth minute.
A night I'll never forget 🤩
— Bukayo Saka (@BukayoSaka87) September 20, 2023
CL Debut, CL Goal, 3-Points ✔️
Back where we belong ❤️ pic.twitter.com/DZUAI2RoKH
Trossard, who scored the only goal at Everton on Sunday, doubled their advantage in the 20th minute with a shot from the edge of the area into the bottom corner.
The Gunners completed a dominant first half on 38 minutes, Jesus controlling a cross from Trossard before rifling in.
Mikel Arteta's side scored their fourth and final goal of the evening, as captain Odegaard drilled in a low 25-yard effort as PSV were beaten for the first time in 26 matches.
Arsenal will now turn their attention to Sunday's north London derby at home to Tottenham Hotspur.
See: Arsenal report and line-up
Man Utd's poor start to the season continued as they suffered a fourth loss of the season in Munich.
How the match unfolded
Two goals in four minutes put Bayern firmly in control at the Allianz Arena. First former Manchester City star Leroy Sane's shot went in thanks to a mistake from goalkeeper Andre Onana.
Serge Gnabry then added a second for the Bundesliga champions on 32 minutes. It was his seventh goal in his last six Champions League matches against English clubs.
The visitors pulled one back on 49 minutes, Rasmus Hojlund scoring his first goal for the club with a finish into the far corner.
However, Bayern added a third four minutes later through Harry Kane, the former Spurs striker converted from the penalty spot for his first European goal for his new side.
Casemiro scored twice late on, either side of a goal from Bayern substitute Mathys Tel, but it was to no avail with United unable to find an equaliser.
Man Utd will hope to bounce back when they travel to Burnley on Saturday.
