Nat Clifton.
According to the Social Security Administration death records, he was born Clifton Nathaniel. Noted for his large hands, which required a size 14 glove, he was invited to join the Harlem Globetrotters, for whom he played from the summer of 1948 to the spring of 1950. Still a talented baseball first baseman, during the basketball off-season in 1949 Clifton played for the Chicago American Giants in Negro League baseball. By 1950, his performance with the Globetrotters, in particular his exceptional ball-handling ability, led to his signing a contract with an NBA team. Clifton claimed to have been given the "Sweetwater" nickname as a boy because of his love of soft drinks. (I would have gone with the nickname "Big Hands")