Mikel Arteta has confirmed Arsenal are investigating their pre-match warm-up routines following four separate injuries before kick-off this season. The most recent case involved Riccardo Calafiori, who was withdrawn for the second time this season after pulling up in the warm-up.
The Gunners manager described the situation as "very unusual," noting it has happened four times this season compared to once or twice in his previous six years at the club. Previous injuries affected William Saliba, Bukayo Saka, and Calafiori, forcing tactical changes and raising concerns about the team's preparation process.