Serena WilliamsRank 1 Total earnings: $18.1 millionSerena Williams tops the list with a whopping $18.1 million in annual earnings, despite her 14-month pregnancy break. In May this year, Wi...Image by Jimmie48 Photography / Shutterstock
Caroline WozniackiRank 2 Total earnings: $13 millionWozniacki has endorsement partners such as Adidas, Rolex, Usana, Babolat and more. Only her endorsements account for $6 million in earnin...Image by Jimmie48 Photography / Shutterstock
Sloane StephensRank 3 Total earnings: $11.2 millionRight when her sponsorship deals were expiring, Stephens' won her first Grand Slam title &ndash the 2017 US Open. The title led to a huge...Image by Lev Radin / Shutterstock
Garbine Muguruza Rank 4 Total Earnings: $11 millionMuguruza&rsquos second Grand Slam title got her big sponsors like Adidas and earned her a deal with Rolex. Her endorsements amount to $5.5...Image by Clive Mason/Getty Images
Maria Sharapova Rank 5 Total earnings: $10.5 millionOf Sharapova&rsquos total earnings from last year, about $9.5 million came from endorsements and the rest was prize money. The Russian te...Image by Jimmie48 Photography / Shutterstock
Venus Williams Rank 6 Total earnings: $10.2 millionThe winner of seven grand slam singles titles, earned $6 million through endorsements and $4.2 million in prize money. This year, American...Image by Jimmie48 Photography / Shutterstock
Simona HalepRank 8 Total earnings: $7.7 millionWith her deal with Adidas having expired by the end of 2017, the Romanian player reached the Australian Open final wearing a dress she designe...Image by Jimmie48 Photography / Shutterstock
Danica PatrickRank 9 Total earnings: $7.5 millionPatrick is the only racer on the list and she moved away from full-time racing after the 2017 Nascar season. Last year, she launched her own...Image by Action Sports Photography / Shutterstock
Angelique KerberRank 10 Total earnings: $7 millionOnly through her endorsements, the German player earns $4 million. She has some of the bigwigs sponsoring her, including Porsche, Rolex, SA...Image by Action Sports Photography / Shutterstock
