Arsenal maintained their perfect start to the season as goalkeeper David Raya and substitute Bruno Guimaraes inspired victory over Sunderland.
Raya saved Enzo Le Fee’s 55th-minute penalty after Ezri Konsa fouled Dan Ballard. Just 121 seconds later, Guimaraes curled in his first Arsenal goal from 20 yards, striking the crossbar on its way in.
Bukayo Saka sealed the win with a stoppage-time penalty after being fouled by Reinildo Mandava, who was sent off for a second yellow card.
The result gave Arsenal six wins from six in all competitions, including four Premier League victories, sending them top of the table.
Sunderland frustrated Arsenal for long periods despite having just 34% possession. Kai Havertz missed two good chances, while Ballard cleared another effort off the line. Jurrien Timber also had a goal ruled out for offside.
Sunderland remain 14th with four points from four league matches.
