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Sport, Tennis, 1939, American Don Budge was the first player to win the Grand Slam in 1938, which meant winning the 4 great tennis championships of the world (Photo by Popperfoto/Getty Images)

Sport, Tennis, 1939, American Don Budge was the first player to win the Grand Slam in 1938, which meant winning the 4 great tennis championships of the world  (Photo by Popperfoto/Getty Images)