Herschel Walker said he could have beaten Mike Tyson in 1988, according to Michael Irvin

As an NFL player, Herschel Walker was one of the last big stars drafted by the legendary Tom Landry to the Dallas Cowboys, with whom he played from 1986 to 1989. He was also part of the now infamous trade that sent him to the Minnesota Vikings and ultimately helped Dallas assemble its championship team of the 1990s.

At the time, Walker was so sure of himself that he remarked, back in 1988, that he could beat heavyweight champion Mike Tyson. This was revealed by his former Cowboys teammate, the legendary Michael Irvin.