Born in England, Arkansas, as Clifton Nathaniel,[2] he was given the "Sweetwater" nickname as a boy because of his love of soft drinks and his easy disposition.

Clifton attended Xavier University of Louisiana in New Orleans and then served with the United States Army for three years, fighting in Europe during World War II.

[9] Already 27 years old when he made his debut, Clifton in his first season helped lead the team to its first-ever appearance in the NBA finals, losing in game seven.

In the summer of 1958, he joined the Detroit Stars baseball team in the Negro leagues, along with his former Harlem Globetrotters teammate Reece "Goose" Tatum.

[citation needed] Clifton's contributions to his community during his sporting career and after his playing days, have been recognized by the Associated Black Charities of New York City.

The Sweetwater Clifton City Spirit Award is given to a member of the community who goes above and beyond his or her normal duties to make the lives of others in the tri-state area better.