Antonio Conte and Jose Mourinho had to be separated as N'Golo Kante's strike sent Chelsea into the FA Cup semi-finals with a 1-0 win over Manchester United at Stamford Bridge.
Fourth official Mike Jones had to intervene as Conte and Mourinho had a frank touchline exchange during a feisty contest in which United had Ander Herrera sent off for two bookable offences after 35 minutes.
Kante's second Chelsea goal six minutes into the second half secured a quarter-final win for the Premier League leaders, who won for a club record 13th successive home game.