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World No.1 tennis player, Novak Djokovic, has become the first player earn $100 million in prize money in his career, following a fourth round win at the French Open this week.

The Serb went into his fourth round tie with No.14 seed, Roberto Bautista Agut, having earned $99,673,404 in his 13 year professional career. And with the prize money for reaching this year's quarter-final at Roland Garros $328,251, meaning Djokovic will leave the French Open with at least $100,001,655 in career winnings.

He goes up against Czech Republic's Tomas Berdych in the quarter-finals at 12pm today.

Former world No.1, Roger Federer is Djokovic's closest rival in terms of prize money, having earned $98,011,727 during his glittering career. Leading the women's game is Serena Williams, who has won $76,796,166.

Djokovic won $118 in his first ever professional tennis tournament. But after winning three of the four majors in 2015, he earned an incredible $21,092,125.

In terms of earnings, Djokovic has hit the height of his career at the perfect time. The total pools of prize money for tennis tournaments are bigger than ever before. In 2011, the French Open paid out €17.5m to competitors. Just five years later, the prize pool is €32m. But that pales in comparison to the $50m likely to be on offer at next year's US Open.