Jelena Dokic's successes during her 16-year tennis career came at a heavy personal price, she says.
The Yugoslavia-born Australian was once ranked fourth in the world, and reached the semi-finals of Wimbledon in 2000, but she claims she suffered years of mental and physical abuse from her father Damir, who coached her from an early age.
Dokic has alleged she was whipped with a leather belt and kicked in the shins if she did not train well, and that she was regularly left bruised and bloodied.
Now 34 and a coach herself, she has released a book and has told BBC World Service's Sportshour programme about name-calling, being evicted from her hotel and having suicidal thoughts.