To most modern day tennis fans, it was impossible to believe that until the late 1960s pro tennis players--that is those who played openly for prize money--were banned from competing in the world's major tournaments. Before this time, the great contests such as Wimbledon were exclusive to so-called amateurs. Amateur tennis players were meant to compete only for glory. Though this division arose the "pro tour" in the 1930s, and it endured for forty...