4. Caroline Wozniacki

Forbes.com: World's Highest-Paid Female Athletes

Earnings: $13.7 million Wozniacki ranked No. 1 in the world at the end of each of the past two years, despite never winning a Major tournament. She earns more than $10 million annually from appearances and sponsors like Adidas, Yonex, Proactiv, Rolex and Sony Ericsson. She is releasing her own line of underwear in September. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

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10. Yani Tseng Earnings: $6.1 million

Tseng has been the most dominant golfer, male or female, during the past two-and-a-half years with 20 victories, including five Majors. The Taiwanese star is on the verge of qualifying for the World Golf Hall of Fame, despite being only 23 years old. (AP)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
9. Agnieszka Rad... Earnings: $6.9 million

At Wimbledon this year, Radwanska became the first Polish player to reach a Grand Slam final in the Open Era. Agnieszka is currently ranked No. 2 in the world and banked $4.9 million in prize money during the past 12-months. Her sister, Urszula, is a tennis pro as well, and is ranked No. 44 in the world. Agnieszka's major sponsors include: Lotto, Babolat and Lexus. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

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8. Ana Ivanovic Earnings: $7.2 million

The former world No. 1 has bounced back after seeing her rank slip to No. 64 in 2010. She has won three tournaments over the past two years and is now ranked No. 12. Her Adidas shoe and apparel deal is one of the richest in women’s tennis. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
7. Kim Yuna Earnings: $9 million

The 2010 Olympic champion sat out the 2011-12 skate season, but plans to return for the 2012-13 season with the goal of skating in the 2014 Winter Olympics in Sochi. Kim is the headliner in the All That Skate figure skating show. The South Korean played a key role in attracting the 2018 Winter Olympics to Pyeongchang, South Korea. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
6. Victoria Azar... Earnings: $9.7 million

The 22-year-old from Belarus is currently the No. 1 ranked player in the world. She earned $6.7 million in prize money over the past 12 months, which was tops on the WTA Tour. Azarenka's new deal with Nike kicked off this year with a huge pay increase. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
5. Danica Patric... Earnings: $13 million

Patrick is racing full-time in Nascar this year for first time, which has boosted her income. She inked personal endorsement deals for Coke Zero and Sega in recent months. She was Yahoo's most searched-for athlete, male or female, in 2011. (AP)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
4. Caroline Wozn... Earnings: $13.7 million Wozniacki ranked No. 1 in the world at the end of each of the past two years, despite never winning a Major tournament. She earns more than $10 million annually from appearances and sponsors like Adidas, Yonex, Proactiv, Rolex and Sony Ericsson. She is releasing her own line of underwear in September. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
3. Serena Willia... Earnings: $16.3 million

Williams remains the world's most dominant player when healthy. She showed that in July when she won her fifth Wimbledon crown and 14th Grand Slam title overall. Williams has won $38 million in career prize money, which is tops among women and fourth among all tennis players, including men. She has been part of the Nike family since the end of 2003. (AP)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

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2. Li Na Earnings: $18.4 million

Li had a magical 2011 with appearances in two Grand Slam finals, including a French Open title, which was the first Grand Slam singles crown by an Asian-born tennis player. The win allowed Li to sign seven three-year, multimillion dollar endorsement deals with Mercedes-Benz, Samsung Electronics and several Chinese firms. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

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1. Maria Sharapo... Earnings: $27.1 million

Her French Open title in June completed a career Grand Slam—the sixth women to accomplish the feat in the Open era. Her Nike deal is the richest in women's tennis. Sales for her Maria Sharapova Collection, which include shoes and accessories for Nike subsidiary Cole Haan, doubled in 2011. (AFP/Getty Images)

More From Forbes:
What It Costs to Raise a Summer Olympian
The Highest-Paid Olympic Athletes
The Top Phrases Trademarked by Athletes

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
More from Forbes... Click here to see the highest-paid Olympic athletes.