The 15th round of the classic Larry Holmes vs. Ken Norton bout of 1978 went down as one of the greatest final rounds in boxing history.

Holmes had just come off a dominating title eliminator bout against Earnie Shavers to extend his undefeated record to 26-0.

Norton had just beaten Jimmy Young in the other half of the WBC heavyweight eliminator and had experience fighting Muhammad Ali, George Foreman and Jerry Quarry. He would be awarded the title shortly after the Young fight, making his fight versus Holmes his first title defense.

In what turned out to be anyone's fight up until the final round, it was impossible to imagine these two going at it like they did.

Norton woulds stalk Holmes down, throwing double and triple left hooks while taking blows of his own. Holmes would take the punches directly on the chin and fire right back to make this one of the greatest rounds in the history of heavyweight boxing.

Both stood up to each other's attack and fought the entire round toe-to-toe.

Holmes would win a controversial split-decision with the scores 143-142, 143-142 and 142-143. He continued his reign as world heavyweight champion until 1985 and finally retired in 2002.

Norton, who was at the end of his prime during the bout, wouldn't fight much longer and retired in 1981.