According to Forbes, the richest sportswoman is a tennis player Serena Williams. Her basic income the world tennis champion gets from advertising contracts: the total sum received from ads has reached $20 million. For her long career, Williams has managed to earn about $78 million in prize money.

Maria Sharapova is the second on the list. This year could be better for the tennis player as she was accused of doping and deprived of the right to participate in competitions. In connection with the scandal, many eminent sponsors such as Nike, TAG Heuer, American Express, Porsche turned away from the Russian tennis player. However, she has earned enough money from advertising ($20 million), so she doesn't have to bother about it.

Ronda Rousey who represents the mixed martial arts is on the third line. Total income of this American athlete is $14 million, $4 million of which has been earned on advertising. Additionally, the sportswoman is often shot in episodes of popular films.

The fourth line is for a racer Danica Patrick whose total income is $13.9 million. Personal sponsor of the 33-year-old girl is the GoDaddy company. The sportswoman earns equal sums on advertising and competitions.

The Polish tennis player Agnieszka Radwanska is on the fifth line. Her income is $10.2 million, and half of this sum has been earned due to advertising. Nowadays, Radwanska is in the top 3 strongest tennis players of the planet.

The sixth on the list is Caroline Wozniacki, another tennis professional. Her income is not as big as Serena William's, but it also amounts to millions of dollars ($8 million). The 26-year-old Danish sportswoman has earned almost all her capital due to advertising. Adidas is the most generous sponsor of the tennis player.

Garbiñe Muguruza, a young tennis player, is the leading contender for the top place in the WTA world rating (Women's Tennis Association). Nowadays, the income of this 22-year-old Spaniard is $7.6 million, $3 million of which she has earned thanks to Adidas advertising.

Tennis player Ana Ivanovic is the eighth on the list with an income of $7.4 million. The Serbian athlete earns her basic income from the cooperation with well-known brands.

Belarusian athlete Victoria Azarenka is on the ninth line. Her total income is $6.6 million, more than half of which she has earned in tennis tournaments.

Canadian tennis player Eugenie Bouchard closes the top ten highest-paid sportswomen. Currently, almost all her income ($6.2 million) is provided by advertisers (Nike, Rolex, Usana).