Bayern Munich scored two goals in 4 minutes of the first half, to win 4-3 at home to Manchester United in Group A of the Champions League football, and in Group B Arsenal won 4-<> at home to Eindhoven on Wednesday.

A fatal mistake from goalkeeper Andre Onana gave Bayern the lead when they failed to save a weak shot from Leroy Sane in the 28th minute.

Sane opens registration for Bavarian #دوري_أبطال_أوروبا | #بايرن_ميونيخ | #مانشستر_يونايتد

— beIN SPORTS (@beINSPORTS) September 20, 2023

Jamal Musiala went on the left flank and passed a ball to Serge Gnabry to score and extend the home side's advantage.

Rasmus Hoylund revived United's hopes at the start of the second half, but that lasted only four minutes.

The referee awarded a penalty to Bayern for a hand touch on Christian Eriksen after returning to VAR and Harry Kane scored in the 54th minute.

Casemiro reduced the deficit a minute before the end to set the stage for a thrilling finish.

What are you doing, Casemiro!! 🤯 #دوري_أبطال_أوروبا | #بايرن_ميونيخ | #مانشستر_يونايتد

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But substitute Matthijs Thiel relieved the nerves of Bayern fans with a fourth goal in the second minute of stoppage time.

Casemiro added United's third goal with a header after Bruno Fernandes' free-kick.

Arsenal thrash PSV Eindhoven

In another match, Arsenal began their participation in the Champions League for the first time since the 2016-2017 season with a 4-<> victory at home to PSV Eindhoven in Group B of the competition on Wednesday.

Bukayo Saka scored the first goal in the eighth minute, and Leandro Trossard and Gabriel Jesus added two goals before the break, amid the complete superiority of coach Mikel Arteta's team.

Bukayo Saka opens the score for the Gunners #دوري_أبطال_أوروبا #ارسنال_ايندهوفن

— beIN SPORTS (@beINSPORTS) September 20, 2023

Despite the dip in the second half, Martin Odegaard scored for the hosts with a neat shot from outside the box in the 70th minute.

Arsenal leads the group with 3 points after Sevilla drew with French guest Lens 1-1.

Martinez saves Inter Milan

In Group D, Lautaro Martinez scored near the end to give Inter Milan – runners-up of the last edition – a 1-1 draw with hosts Real Sociedad at the start of their Champions League campaign.

The home side have been the better side for most of the game and the Serie A leaders will be happy to draw after their opponents missed many chances.

Sociedad's advanced pressure paid off after just four minutes, when Bartz Mendes took advantage of a mistake by defender Alessandro Bastoni to find the back of the net.

Defensive mistake costs Inter an early goal #ChampionsLeague#ريال_سوسيداد_إنتر

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Inter, who are unbeaten in the league so far, equalized by Martinez from the team's first attempt on target in the 87th minute.

Salzburg leads Group D after a 2-<> win over Benfica in the biggest surprises of the first round.