Breitenstein attended Farmington High School, where he was a teammate of future NFL player Ralph Neely.
[7] As a rookie, he started in 7 games, while sharing the left tackle position with Lee Bernet.
On July 1, 1967, he was traded to the Minnesota Vikings in exchange for a fifth round draft choice (#117-Mike Bragg).
He was a vice president of the National Football League Players Association for the state of Oklahoma.
He appeared in the movie Brian's Song, when the director used actual footage, showing him helping cart running back Gale Sayers off on a stretcher.