A Los Angeles jury on Tuesday rejected a claim by the widow of a former USC football player who said the NCAA failed to protect him from repeated head trauma that led to his death.

Matthew Gee, a linebacker on the 1990 Rose Bowl-winning squad, endured an estimated 6,000 hits that caused permanent brain damage and led to cocaine and alcohol abuse that eventually killed him at age 49, lawyers for his widow alleged.

The NCAA said it had nothing to do with Gee’s death, which it said was a sudden cardiac arrest brought on by untreated hypertension and acute cocaine toxicity. A lawyer for the governing body of U.S. college sports said Gee suffered from many other health problems not related to football, such as liver cirrhosis, that would have eventually killed him.

The verdict could have broad ramifications for college athletes who blame the NCAA for head injuries.

Hundreds of wrongful death and personal injury lawsuits have been brought by college football players against the NCAA in the past decade, but Gee’s is the first one to reach a jury alleging that hits to the head led to chronic traumatic encephalopathy, a degenerative brain disease known by its acronym, CTE.

Alana Gee said the college sweethearts had 20 good years of marriage before her husband’s mental health began to deteriorate and he became angry, depressed and impulsive, and began overeating and abusing drugs and alcohol.

Attorneys for Gee said CTE, which is found in athletes and military veterans who suffered repetitive brain injuries, was an indirect cause of death because head trauma has been shown to promote substance abuse.

The NCAA said the case hinged on what it knew at the time Gee played, from 1988-92, and not about CTE, which was first discovered in the brain of a deceased NFL player in 2005.

Gee never reported having a concussion and said in an application to play with the then Los Angeles Raiders after graduating that he had never been knocked unconscious, NCAA attorney Will Stute said.

“You can’t hold the NCAA responsible for something 40 years later that nobody ever reported,” Stute said in his closing argument. “The plaintiffs want you in a time travel machine. We don’t have one … at the NCAA. It’s not fair.”

Attorneys for Gee’s family said there was no doubt that Matt Gee suffered concussions and countless sub-concussive blows.

Mike Salmon, a teammate who went on to play in the NFL, testified that Gee, who was team captain his senior year, once was so dazed from a hit that he couldn’t call the next play.

Gee was one of five linebackers on the 1989 Trojans squad who died before turning 50. All displayed signs of mental deterioration associated with head trauma.

As with teammate and NFL star Junior Seau, who killed himself in 2012, Gee’s brain was examined posthumously at Boston University’s Chronic Traumatic Encephalopathy Center and found to have CTE.

Jurors were not allowed to hear testimony about Gee’s deceased teammates.

Gee’s lawyers said the NCAA, which was founded in 1906 for athlete safety, had known about impacts from head injuries since the 1930s but failed to educate players, ban headfirst contact, or implement baseline testing for concussion symptoms.

Attorneys had asked jurors to award Alana Gee $55 million to compensate for her loss.