In 2007, Wimbledon became the last Grand Slam tennis tournament to award male and female players equal prize money. Tennis has certainly helped narrow the wage gap in sports: In 2015, seven of the top 10 highest-paid female athletes were tennis players. In some instances, like the U.S. Open finals in 2013 and 2014, the women’s matches garnered higher TV ratings than the men’s.

Still, despite earning equal prize money for winning tournaments, the top male players’ earnings still outstrip those of most of their female counterparts. Men tend to receive more endorsement deals and sponsorships than women, and their matches are generally given more prominent TV slots and media coverage. What’s more, some people–like BNP Paribas Open tournament CEO Raymond Moore, who said as much in March—still operate under the delusion that the men’s game is more challenging and popular.

In honor of Wimbledon, which kicked off this week, let’s take a look at the wage gap between the highest-paid tennis players, ranked by the past year’s earnings (data from Forbes):

Petra Kvitova

petra-kvitova

Earnings: $7.7 million

Rank: 5th-highest-earning woman

The 26-year-old Czech player, a two-time Wimbledon champion, is known for her powerful left-handed groundstrokes. She has added to her prize money by endorsing Nike apparel and footwear, as well as Czech jewelry manufacturer ALO Diamonds. This year, she was sidelined by a gastrointestinal illness but came back to compete in Wimbledon, where so far she defeated Romanian Sorana Cirstea in the first round.

Andy Murray

Andy Murray

Earnings: $23 million

Rank: 5th-highest-earning man

The Scottish star, a two-time Grand Slam champion, has reached at least the quarterfinals of every Grand Slam tournament he has participated in since 2011. He’s also the reigning Olympic champion, having defeated Roger Federer for the title. Murray’s earnings are augmented by a five-year, $30 million endorsement deal with Adidas, as well as a reported $25 million agreement with Under Armour that began in 2014. As the fifth-highest-earning man in tennis, his takeaways from the sport almost triple those of the fifth-highest earning female player, Petra Kvitova.

Ana Ivanovic

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Earnings: $8.3 million

Rank: 4th-highest-earning woman

After winning the 2008 French open, the now-28-year-old Serbian player subsequently fell into a slump, failing to make a quarterfinal in her next 17 Grand Slam tournaments. In 2014, she rebounded by winning a series of smaller tournaments, including the Auckland Open and Aegon Classic, and is now ranked #25 by the Women’s Tennis Association. She has added to her multi-million-dollar fortune by endorsing by Nike and Adidas; in 2006, she signed a lifetime contract with the latter.

Kei Nishikori

Earnings: $33.5 million

Ranking: 4th-highest-earning man

The 26-year-old from Japan is ranked #6 by the Association of Tennis Professionals, the only Japanese male player to ever crack the top 10. His performance at the 2014 U.S. Open, where he was runner-up, made him the first-ever male player from an Asian country to make it to a Grand Slam singles final. He has endorsed the Wilson BLX Steam 99 racquet, and is sponsored by companies like TAG Heuer and Delta Airlines. Nishikori’s earnings more than quadruple those of the fourth-highest-earning female player, Ana Ivanovic.

Caroline Wozniacki

caroline-wozniacki-wimbledon

Earnings: $14.6 million

Rankings: 3rd-highest-earning woman

The 25-year-old Danish player held the #1 ranking from the WTA Tour for 67 weeks, the only woman from a Scandinavian country to do so. Since she began her professional career in 2005, she improved her year-end ranking each year until reaching the top slot in 2010 and 2011. She’s also been a runner-up at the 2009 and 2014 U.S. Open championships. Her earnings have been bolstered by her role as an endorser for a line of Adidas tennis apparel designed by Stella McCartney.

Rafael Nadal

nadal-barcelona

Earnings: $37.5 million

Rank: 3rd-highest-earning man

Known as the King of Clay for his dominance on that playing surface, the #4-ranked player has won 14 Grand Slam singles titles. The 30-year-old Spaniard also took home the 2008 Olympic gold medal in singles tennis but could not defend his title in the 2012 Games due to a knee injury. He’s currently sitting out Wimbledon with a wrist injury. His earnings—bolstered by endorsements and sponsorships from companies like Kia Motors and Nike—are about 2.5 times greater than those of the third-highest earning female player, Caroline Wozniacki.

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