Hasim Sharif Rahman (born November 7, 1972) is an American former heavyweight champion best known for one of boxing’s most dramatic upsets — his thunderous 2001 knockout of Lennox Lewis in South Africa. Nicknamed “The Rock,” Rahman’s rise from Baltimore’s tough streets to the pinnacle of world boxing embodied perseverance, power, and self-belief.

Rahman’s path to boxing glory was anything but typical. Growing up in a rough environment, he turned to the sport late, taking up boxing at age 20 after surviving a near-fatal car accident. Standing 6 feet 2 inches tall and weighing around 240 pounds in his prime, Rahman possessed a blend of size, durability, and natural punching power that made him an instant force in the heavyweight ranks.

He turned professional in 1994 and quickly climbed through the division with a string of knockouts, earning a reputation as a dangerous contender capable of ending fights with a single punch. His early run included notable wins over Corrie Sanders and Bert Cooper, along with hard-fought battles against David Tua and Oleg Maskaev that tested his resilience.

Rahman’s defining moment came on April 22, 2001, in Brakpan, South Africa. Entering as a massive underdog against reigning champion Lennox Lewis, Rahman stunned the boxing world with a perfectly timed overhand right that knocked Lewis out cold in the fifth round. The victory crowned Rahman as the unified heavyweight champion and instantly elevated him to global fame.

His reign was short-lived. In the rematch later that year, Lewis regained the titles by knockout, avenging the loss. Yet Rahman remained a fixture in the division for more than a decade, continuing to face elite opponents and earning a second world title in 2005 when he defeated Monte Barrett for the WBC interim belt, later elevated to full champion status.

Throughout his career, Rahman built a record of 50 wins, 9 losses, and 2 draws, including 41 knockouts. He was known for his composure under fire and his ability to recover from setbacks — both inside and outside the ring. His longevity and willingness to face top opposition cemented his standing as one of the most respected heavyweights of his generation.

Hasim Rahman’s story is one of power and perseverance. From the streets of Baltimore to the bright lights of Las Vegas and Johannesburg, “The Rock” proved that belief and determination could shake the foundations of boxing’s most storied division.