Former Newcastle United striker Alan Shearer has claimed that Arsenal have already played their toughest game of the season.
According to Shearer, the Gunners will not face a more difficult opponent than Sunderland at the Stadium of Light.
Mikel Artetas men were held to a 2-2 draw last weekend, thanks to a late equaliser by Brian Brobbey, who ensured the hosts remained unbeaten on their home turf.