Arsenal extended their perfect Premier League record with a 2-0 victory over Sunderland, though they required a moment of brilliance from substitute Bruno Guimaraes — arriving just 121 seconds after David Raya's crucial penalty save — to clinch the points against a resilient home side.

Raya the rescuer

Raya had little to do for most of the match, but when Sunderland won a penalty, the Arsenal goalkeeper produced a superb stop that proved to be a turning point. Moments later, Guimaraes, who had only just entered the pitch, unleashed a thunderbolt to put Arsenal ahead — a first goal in the most dramatic of fashions.

Bukayo Saka, despite missing a clear early chance and a one-on-one opportunity later on, eventually won and converted a late penalty to seal the result. His contribution was unconvincing at times, but decisive when it mattered.

Sunderland's bright spots

Sunderland were far from passive. Brian Brobbey caused Ezri Konsa and Ben White constant difficulty through the evening, using his strength and hold-up play to manufacture space for teammates. Granit Xhaka delivered quality from set pieces and made a critical clearance on the stroke of half-time that kept the scores level going into the break.

Dan Ballard was defensively reliable, won the penalty that gave Sunderland hope, and Nordi Mukiele created late opportunities that Raya was forced to deal with — including one that should have been converted. Reinildo Mandava, however, had a difficult evening: he conceded a penalty and was sent off late on, leaving Sunderland short-handed when they needed players most.

Arsenal's concerns

For all their winning habit, Arsenal gave Mikel Arteta plenty to think about. Myles Lewis-Skelly was sloppy and fortunate to avoid an early booking before being hauled off at half-time. Konsa was similarly unconvincing, conceding the foul that led to Sunderland's penalty. Kai Havertz wasted a clear-cut chance at 0-0, while Christos Tzolis faded after a promising start.

Declan Rice worked hard and showed awareness to tee up Guimaraes for the opening goal, while Martin Odegaard was unable to maintain his blistering early-season form. Jurrien Timber, introduced at half-time for White, performed markedly better and had a headed goal ruled out for offside.

Arsenal remain on maximum points, but they will need a sharper display if they are to keep pace with title rivals over the months ahead.