When you're embarking on a crucial relegation battle, emotions can run high.
That certainly seemed to be the case at Carrow Road, where players from Norwich City and Sunderland got involved in a bit of fisticuffs within minutes of kickoff.
Even Sunderland boss Sam Allardyce got involved.
https://twitter.com/_AndyHa/status/721305143740932096
While you might think some people would bemoan this regrettable aspect of the modern game, that wasn't exactly what happened.
These are football fans we're dealing with, after all.
https://twitter.com/GameofThrowIns/status/721304613262110720
https://twitter.com/BeardedGenius/status/721308142060101634
https://twitter.com/danielstorey85/status/721304759345553408
https://twitter.com/JamesTylerESPN/status/721304548439126016
https://twitter.com/AFHStewart/status/721303264038424577
