One of the greatest American tennis players of all-time, Arthur Ashe became the first African-American man to win Wimbledon, the US Open and Australian Open. This Spalding tennis ball with his autograph is NRMT and his signature is 8/10. Ashe - whose name graces the grand stadium at the US Open - was just as renowned a humanitarian as he was an athlete, having devoted a great deal of his spare time to social causes.