The managers of Tottenham and Brighton, Cristian Stellini and Roberto De Zerbi, were both sent off during their sides' clash in north London, after squaring up to one another on the touchline.
The two coaches and their staff were caught up in a pitchside tussle, before referee Stuart Attwell handed them both red cards and sent them down the tunnel at the Tottenham Hotspur Stadium.
Stellini kept his distance from the main fray and was aggrieved to receive a card, but Attwell stood firm in his decision.
Before the match, the managers shook hands but their greetings quickly soured as pictures showed De Zerbi pointing his finger at Stellini and the Spurs manager growing increasingly angry with what his counterpart had to say.