Despite having earned millions of dollars and winning eight Grand Slam titles Andre Agassi now admits that he hated tennis.
But he says tennis provided the vehicle for him to raise enough money to build the Las Vegas school which now bears his name.
He spoke to HARDtalk's Stephen Sackur about his career and who he thinks is the best player - Roger Federer or Rafael Nadal.
Agassi's 'mission' takes him back to school
You can watch the full interview on Thursday 26 August 2010 on BBC World News at 0330, 0830, 1530, and 2030 GMT.