It’s been found that the late Ken Stabler had C.T.E., the degenerative brain disease believed to be caused by repeated blows to the head, according to the New York Times.

The legendary quarterback at Alabama and Super Bowl-winning quarterback for the Oakland Raiders was a victim of colon cancer at the time of his death back on July 8.

After an autopsy was performed, researchers at Boston University discovered that Stabler had high Stage 3 chronic traumatic encephalopathy, or C.T.E., based off a 1-4 scale.

Stabler was a second-round draft pick by the Raiders in 1968. He was the NFL’s MVP with the franchise in 1974 before leading Oakland to its first Super Bowl title two seasons later with a 32-14 win over Fran Tarkenton and the Minnesota Vikings.

C.T.E. has gotten widespread attention around the world recently. The movie “Concussion” was released on Christmas Day, which tells the story of Dr. Bennet Omalu, played by Will Smith, discovering the disease in former NFL players and fighting to get the league to pay attention to his findings.

Tyler Sash, a former New York Giants safety, was diagnosed with the disease in a story by the New York Times on Jan. 26. Sash, 27, was found dead in his Iowa home in September.