Arsenal are reviewing their pre-match routines following an unusual pattern of injuries during warm-ups this season. The most recent case involved Riccardo Calafiori, who was withdrawn before the Wigan game for the second time this season.
Earlier in the campaign, William Saliba and Bukayo Saka also suffered pre-match injuries, forcing Arteta to make last-minute changes to his team. The manager acknowledged the pattern is unusual, stating: "It probably happened once or twice in six years I've been here and it's happened four times [this season]. We're looking into it."