Arsenal secured their first win in the new Champions League format as they overcame Paris St-Germain at Emirates Stadium.

Mikel Arteta’s side followed an opening draw with Atalanta by taking control with two first-half goals from Kai Havertz’s header and a free-kick from Bukayo Saka that drifted in past PSG goalkeeper Gianluigi Donnarumma.

PSG had their moments, especially when Nuno Mendes and Joao Neves hit the woodwork either side of the break, but the platform for victory was established by a dominant first-half display from Arsenal.

Havertz put them ahead after 20 minutes when he beat Donnarumma to Leandro Trossard’s inviting cross to head home, before the keeper was deceived by Saka’s set-piece from near the touchline as he was unsighted in a packed penalty area.

PSG, stripped of the old superstars such as Kylian Mbappe, Lionel Messi and Neymar, mounted periods of pressure after the break as Arsenal struggled to retain possession, but Arteta felt confident enough to give a debut to Mikel Merino, a £31m signing from Real Sociedad, on another satisfactory night for Arsenal.