Leicester have recorded the joint-biggest margin of victory in Premier League history, alongside Manchester United’s 9-0 win over Ipswich at Old Trafford in March 1995.
Foxes have also recorded the biggest-ever victory by an away side in an English top-flight league match in the 131-year history of the Football League.
Moreover, Vardy's side become only the second side in Premier League history to have two players score a hat-trick in the same game (Pérez and Vardy), after Arsenal in May 2003 - also against Southampton (Pennant and Pires).