Man City, Liverpool win thrillers
Lionel Messi made his first Paris Saint-Germain start in a 1-1 draw at Club Brugge in the Champions League on Wednesday, while last season's runners-up Manchester City and Liverpool won high-scoring thrillers.
Real Madrid, the record 13-time European champions, left it late to beat Inter Milan at the San Siro in a section topped by Moldovan debutants Sheriff Tiraspol after the first round of group stage matches.
"We need time for them to get to know each other," PSG coach Mauricio Pochettino said of his all-star attack.
Pep Guardiola's City, beaten 1-0 by Chelsea in May's final in Porto, overcame a hat-trick from Christopher Nkunku to beat RB Leipzig 6-3 at the Etihad Stadium.
Liverpool captain Jordan Henderson hit the winner for Jurgen Klopp's side as they came from behind to defeat Milan 3-2 at Anfield in a meeting of two clubs who have combined for 13 European Cups.
"It is a tough group. That is why it is important we won this game. It does not decide anything but it gave us a winning start," Jurgen Klopp told BT Sport.
In the other Group B game, Spanish champions Atletico Madrid drew 0-0 at home to Porto, who were frustrated by a decision to disallow Mehdi Taremi's late goal.
Newcomers Sheriff defeated Shakhtar Donetsk 2-0 thanks to goals from Mali international Adama Traore and Guinean forward Momo Yansane.
England midfielder Jude Bellingham scored one goal and set up Erling Haaland for Borussia Dortmund's second in a 2-1 win away to Turkish champions Besiktas.
Ajax powered to the top of Group D as Ivorian striker Sebastien Haller bagged four goals in a 5-1 demolition of Portuguese champions Sporting Lisbon.