Arsenal coach Mikel Arteta has confirmed the club is investigating its pre‑match warm‑up procedures after four separate injuries before kick‑off this season. He described the pattern as "very unusual" and said the review is underway.
The most recent case involved Riccardo Calafiori, who was withdrawn before the Wigan match after pulling up in the warm‑up. Earlier, William Saliba was ruled out at Anfield and Bukayo Saka missed the Leeds trip. The incidents forced lineup changes, with Myles Lewis‑Skelly moving to left‑back and Saka starting in midfield.