Ray Robinson knocked out champion Gene Fullmer with a left hook to the jaw in 1:27 of the fifth round to become the first man ever to win the world middleweight title four times.
A 3 to 1 underdog, Robinson softened up the 25-year-old champion with two solid right hand punches to the body and then drove home a terrific left that dropped Fullmer to the Chicago Stadium deck.
Fullmer, attempting to get up, fell back on his face and was counted out for the first time in 44 bouts.
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