Mikel Arteta accused his Arsenal players of lacking the standards needed to win the Premier League after Saturday's 1-0 home defeat to West Ham United.
AC Milan endured a frustrating evening when an early own goal from Malick Thiaw and a missed penalty from Christian Pulisic saw them fall 2-1 at Torino.
Arsenal's Premier League title hopes suffered a hammer blow as Jarrod Bowen's goal just before halftime gave London rivals West Ham United a surprise 1-0 away victory on Saturday.