MANCHESTER, England -- Altay Bayindir's 13th-minute mistake gifted Riccardo Calafiori the only goal as Arsenal beat Manchester United 1-0 at Old Trafford on Sunday.
United were the better side for long periods. Still, despite handing full debuts to summer signings Bryan Mbeumo and Matheus Cunha -- before introducing Benjamin Sesko for the final 25 minutes -- Ruben Amorim's side failed to find the net.
Amorim admitted before kickoff that goalkeeper André Onana was fit enough to start, but opted for Bayindir, and that decision backfired as his mistake proved to be the crucial moment.