Sunderland gave their hopes of survival in the Premier League a massive boost on Sunday, thrashing arch-rivals Newcastle 3-0.
It's the club's first win at St James' Park in 13 years.
Stephane Sessegnon, Adam Johnson and David Vaughan scored in what Sunderland boss Paolo Di Canio called the best match of his managerial career.
"As a single game, it is the most important win of my career, but it's nothing if we don't stay up," he said.
The result leaves Sunderland three points clear of the drop zone with five games left to play.
There was violence after the match though, as Newcastle fans marched in crowds through the city, throwing bottles and bins. Mounted police tried to hold the crowds back.
Newcastle United FC said in a statement that it was "embarrassed and appalled by the behaviour of a minority of so-called fans".
The club went on to say that they would work with the police to find out who caused the disurbances and would "impose immediate lifetime bans on all those found guilty".