If he had it to do over, Brad Gilbert would never have played a professional tennis tournament in South Africa while the country was embroiled in apartheid.
Martina Navratilova has never regretted challenging Czechoslovakia’s Communist government by defecting to the United States in 1975, but she wishes she had been able to convince her parents and younger sister to come with her.
And Cliff Drysdale, the first president of the ATP, the men’s pro players’ association, is still in awe of his fellow pros for agreeing to boycott Wimbledon in 1973 when the Croatian player Nikola Pilic was suspended by his native Yugoslav Tennis Federation, which said he refused to play for Yugoslavia in the Davis Cup in New Zealand.