Arteta seethes at Sunderland penalty decision despite Arsenal win

Arsenal manager Mikel Arteta labeled the decision to award Sunderland a penalty 'unacceptable' after his team secured a 2-0 victory, maintaining their perfect start to the season. David Raya's crucial penalty save in the second half was followed by Bruno Guimaraes's first goal for the club. Arteta expressed his frustration with referee John Brooks's decision, stating it could change the course of a season.