Tuesday’s joint practice between the Cowboys and Raiders in Oxnard, Calif., was supposed to be a harmless, routine scrimmage. What transpired instead was something straight out of the WWE.

According to the Fort Worth Star-Telegram, an “all-out brawl” broke amongst Dallas’ defense and Oakland’s offense on the sidelines, with Cowboys cornerback B.W. Webb narrowly avoiding being hit by a helmet-swinging Raiders fan.

“It’s definitely a dangerous situation,” Webb said. “I don’t know why fans would want to jump on this side of the fence. I don’t think they’d like it too much on this side.

In an “intense” practice, emotions boiled over when Cowboys corner Morris Claiborne taunted Raiders fans after tackling a Raiders tight end. Claiborne’s antics didn’t go over well with Oakland receiver Greg Little, who began a pushing-and-shoving match.

Then, predictably, all hell broke loose as “every player came rushing in” to an old-fashioned melee, giving the fans a little more action than anticipated.

At the conclusion of the practice, when the dust settled, Webb finally understood the reputation of Raiders fans.

“I hear they’re crazy, man,” Webb said. “You always hear about the Raiders’ fans, the Black Hole. They’re loud, they’re crazy. But you’ve just got to block them out … or try to.”

Lesson learned. The hard way.