During joint practice on Saturday afternoon, the San Francisco 49ers and Denver Broncos showed their distaste for one another.
A day after star corner Richard Sherman said joint practice between the two team went well, a fight broke out.
According to a report from 49ers writer Alex Tran, it all started when safety Marcell Harris went down with a cheap shot.
The two teams then came to blows in the thirty-second video before team officials were able to break to two sides up.
Two members of the Broncos team were ejected from practice as a result of the skirmish.
This is hardly a new sight for training camp. With players doing everything their can to make the 53-man roster, tempers tend to flare.
These two teams will fight it out in practice for another day before their officially meet on the field. San Francisco and Denver are slated for an 8:00 p.m. ET kickoff on ESPN's "Monday Night Football."
This is one game not to miss.