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Harry Greb's professional boxing career spanned from 1913 to 1926. Known for his relentless fighting style and exceptional endurance, Greb amassed an impressive record of 261 wins, 19 losses, and 17 draws. He held the American Light Heavyweight Championship and the World Middleweight Championship during his illustrious career. Despite his remarkable achievements, Greb's career was tragically cut short due to injuries sustained in the ring.