We're told Beasley was heated over a situation involving a mutual female friend -- Instagram model Montana Yao -- and had called out Cravens to settle things once and for all.
The 2 pros trade blows for a minute before Su'a takes Beasley to the ground and appears to be winning the fight from the top position.
You can see Yao and a male friend of Beasley's jump in and removed Cravens. The NFL player eventually backs away from the scrum.
Yao is seen trying desperately to hold Beasley back -- using all of her strength to keep him from continuing the fight. After literally forcing herself in between the two combatants, she eventually throws herself to the ground and appears to be sobbing.
Meantime, we're told Cravens continued to taunt Beasley -- and invited him to "step outside" to continue the fight. Beasley DID go outside, but we're not sure what happened next.
What we do know ... Cravens went to Snapchat after the fight and bragged about beating Beasley up.
"I just had to beat a n***a ass that just tried me," Cravens said while wearing the same cloths from the brawl ... "Scratched my face, but I f*cked that n***a up, ol bytch ass n***a."