Bukayo Saka lasted just 25 minutes of Arsenal's clash against Crystal Palace before being forced off with an injury.
After a frantic start to the match which saw the Gunners race into a 2-1 lead, the winger fell to the ground and clutched his right hamstring before being substituted.
The England international - who has provided five goals and 10 assists in the league - was swiftly replaced by Belgian teammate Leandro Trossard.
Though the nature of Saka's injury has not yet been confirmed, Arsenal fans will be hoping it's not a recurrence of the hamstring injury back in October.