On this day, Marvelous Marvin Hagler was born in Newark, New Jersey. Hagler rose to become the undisputed middleweight boxing champion of the world from 1980 to 1987, making twelve successful title defenses during his reign. He holds the highest knockout percentage of any middleweight champion in history—an impressive 78%. In 1982, frustrated that commentators often omitted his ring nickname, he legally changed his name to Marvelous Marvin Hagler, ensuring the respect and recognition he earned in and out of the ring.
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