Former Jet Mark Gastineau's daughter sacks boyfriend in hotel fight: Report

It sounds like Mark Gastineau's daughter is carrying on the mayhem he did as a member of the infamous New York Jets Sack Exchange 30 years ago.

The former defensive end's daughter, Brittny Gastineau, is reportedly tangled up in a relationship mess and has been accused of being a boyfriend beater. 

The former reality star was sporting a black eye during a night out in L.A. on Tuesday, but a subsequent claim from Marquis Lewis' attorney that she had actually been the aggressor.

TMZ reported on the bloody aftermath:

The hotel room where Brittny was brutally attacked by a famous street artist was a bloody mess the morning after the violence ... and TMZ has obtained pictures of the horrifying scene. 

Blood was smeared on a bathroom door, on bed sheets, furniture and the floor. There was also broken glass, along with bottles of booze and beer scattered around the room. 

As we previously reported -- Brittny says she was attacked by graffiti artist, Marquis Lewis. Lewis' attorney claims it was mutual combat during an argument ... and he was also injured.

Sources in the hotel tell us ... guests heard a lot of door slamming, cursing, and breaking glass. We're told the blood trail continued into the hallway and elevator.

But now a source close to the aspiring actress and Kardashian pal told RadarOnline that such claims are false, and Gastineau is “scared” and “traumatized” after the incident.

The "street artist's" attorney, Michael Goldstein, insisted the couple were both aggressors in the fight.