Former Buffalo Bills guard and Pro Football Hall of Famer Billy Shaw died on Friday. He was 85 years old.

His family announced that he died of hyponatremia.

Shaw spent all nine years of his career at left guard for the Bills from 1961 through 1969, earning eight AFL All-Star nods. He also helped Buffalo win two AFL championships during his tenure with the organization.

Shaw was inducted into the Hall of Fame as part of the 1999 class.

Hall of Fame president Jim Porter said Friday in a statement:

“Billy Shaw holds the distinction of being the only member of the Pro Football Hall of Fame to play his entire career in the American Football League, but while that fact is worthy of noting and nice to recite, it comes nowhere near providing the reason he was elected as a member of the Class of 1999. Billy’s all-around athleticism brought a new dimension to the guard position and made the 1960s Buffalo Bills a formidable opponent capable of bruising opponents with a punishing rushing attack. And while Billy could be unforgiving to anyone in his way on the football field, he was the classic example of the ‘Southern gentlemen’ off the field to everyone he encountered.”

Shaw played four years in college at Georgia Tech from 1957-61. He earned a First Team All-SEC nod in 1960 as well as All-America honors in his senior season. Shaw initially played on the defensive line, but he switched over to the offensive line during the 1961 College All-Star Game following an injury to a teammate.

He was selected by the Bills in the second round of the 1961 AFL draft and was also picked by the Dallas Cowboys in the 14th round of the 1961 NFL draft. Shaw ultimately chose to play for Buffalo in order to be an offensive lineman, as the Cowboys wanted him to suit up as a linebacker.

“I never played linebacker before and I just didn’t want to try to play a new position,” Shaw later explained, via Sal Maiorana of the Rochester Democrat & Chronicle. “I signed with the Bills because they were going to play me at positions that I was used to playing.”

He was a staple of Buffalo’s first-string offense throughout his career with the Bills, starting in 116 of his 119 games played.

In addition to the Pro Football Hall of Fame, Shaw was also inducted into the Georgia Tech Sports Hall of Fame in 1979 and the Mississippi Sports Hall of Fame in 1996.