One of the best sports books I have read is John Carlin’s Playing The Enemy, an account of South Africa hosting and winning the Rugby World Cup of 1995. Rugby was the game of the White supremacist Afrikaners, the architects of the apartheid system, yet it had an unlikely fan in Nelson Mandela. Carlin sensitively recreates how Mandela, a man jailed for decades by Afrikaner politicians, came to embrace the sport, discussing its technicalities with its fans. After his release, Mandela became president of South Africa and, in that capacity, became the unofficial mascot of a White-dominated rugby team, developing...