Instead, Robinson found himself battling more than his opponent.

Fought under oppressive summer conditions that pushed temperatures beyond 100 degrees, with the ring lights making matters even worse, the outdoor championship bout quickly became a grueling test of endurance as much as skill.

For much of the fight, Robinson appeared to be in complete control.

Robinson dictated the fight through the opening rounds, repeatedly beating Maxim to the exchange with quick combinations before circling away from danger. The defending champion struggled to pin down the smaller challenger, who was comfortably ahead on the scorecards before the heat began to change the bout.

By the middle rounds, however, the conditions inside Yankee Stadium began changing the fight. Giving away nearly 20 pounds while maintaining a relentless pace, Robinson gradually lost the spring in his legs as the oppressive heat and dehydration sapped his strength. Even referee Ruby Goldstein succumbed to the conditions, becoming too ill to continue after the 10th round and requiring a replacement for the remainder of the fight.

By the end of the 13th round, Robinson was visibly exhausted. After returning to his corner, the legendary champion collapsed onto his stool, suffering from severe heat exhaustion. Unable to answer the bell for the 14th round, his corner stopped the fight, giving Maxim a retirement victory and allowing him to retain the world light heavyweight championship.

The result remains one of boxing’s most unusual championship bouts. Robinson had controlled much of the action before the extreme conditions overwhelmed him, making it the only time in more than 200 professional fights that he failed to finish a contest. While Maxim earned one of the biggest victories of his career through his durability and persistence, the fight is still remembered as the night one of boxing’s greatest champions was ultimately defeated by the heat rather than by his opponent.