Michael Spinks world Heavyweight champion in Las Vegas. 1979 saw Spinks get less than three minutes of boxing action inside a ring, with his only fight ending in a first round knockout of Marc Hans, but in 1980, Spinks took his ascent towards the top to another level, when he beat future IBF super-middleweight champion Murray Sutherland, David Conteh, and fringe contenders Ramon Ronquillo and Alvaro Yaqui Lopez (who challenged for a world title four times). Of his five wins that year, three came by knockout, Sutherland and Johnny Wilburn being the only ones who lasted the distance. By 1981, Spinks was
Michael Spinks only fighter to floor Spinks. It would be Spinks's first defeat in the professional ring, as well as his last, as he retired following the fight. Spinks had a record of 31 wins and 1 loss, with 21 wins by knockout as a professional. In addition to his success as a heavyweight, Spinks is generally considered one of the greatest light-heavyweight champions and fighters of all time. He was the only light-heavyweight champion to remain undefeated in the entire history of the division since its inception in 1903 (until Joe Calzaghe), as well as the only reigning light-heavyweight champion to