#TBT: Watch Cowboys and Raiders brawl during practice

The NFL preseason is almost here, and teammates who have been practicing and scrimmaging against each other are ready to hit guys on other teams.

No one was more ready than the Dallas Cowboys and Oakland Raiders in 2014, when they held a joint practice that turned into an all-out brawl.

A sideline hit and some taunting by the Cowboys' Morris Claiborne led to all kinds of pushing and shoving, and then a wild scrum in front of the fans, who also got involved. One even whacked B.W. Webb with a replica Raiders helmet, and the Cowboys cornerback struck back.

"Two teams going after it and happened to be some fans, too," Webb told ESPN's Tim McMahon. "Hey man, it happened. I wasn't expecting that. But whoever jumped on my back, I had to get them off. Hey, you got to let them know, man, the only thing protecting you is this fence."