Mikel Arteta left the Stadium of Light satisfied with Arsenal's overall display but deeply unsettled by a penalty decision that went against his side during their Premier League victory over Sunderland.

Arsenal ran out 2-0 winners on the day, but Arteta made clear that a spot-kick awarded to Sunderland during the match had left him troubled. The Arsenal manager described himself as "very worried and very sad" about the officiating call.

Despite the final scoreline reflecting a comfortable win for Arsenal, Arteta's frustration with the referee's decision was unmistakable. His comments suggest the incident may fuel a wider conversation around refereeing standards in the Premier League this season.

Arteta has been vocal about officiating decisions before, and this latest reaction underlines his belief that certain calls carry consequences far beyond a single match. For Arsenal, however, the three points secured at Sunderland keep them firmly in the hunt at the top of the Premier League table.