Graf, who won 107 career singles titles, said juggling the demands of motherhood and her charity work made it difficult to establish a strict training regimen.

• 职业生涯赢得107次单打冠军的格拉芙说为了勉强满足做母亲的需要和她的慈善实业使建立一个严格的训练强化课非常困难。