Kei Nishikori Net Worth

What Is Kei Nishikori's Net Worth and Career Earnings?

Kei Nishikori is a Japanese professional tennis player who has a net worth of $35 million.

Kei Nishikori became the highest-ranked Japanese male player of the Open Era and the first Asian man to reach a Grand Slam singles final. He achieved that historic breakthrough at the 2014 US Open, where he defeated world No. 1 Novak Djokovic in the semifinals before losing to Marin Čilić in the championship match.

Nishikori reached a career-high ranking of world No. 4 in 2015 and won 12 ATP Tour singles titles. His career highlights included four consecutive championships at the tournament formerly held in Memphis, two Barcelona Open titles, two Japan Open victories, and a bronze medal at the 2016 Rio Olympics. He also reached the quarterfinals or better at all four Grand Slam tournaments.

In addition to earning more than $26 million in official prize money, Nishikori became one of the highest-paid athletes in Japan through endorsement agreements with brands including Uniqlo, Wilson, Nissin Foods, Japan Airlines, TAG Heuer, and Jaguar. After several seasons disrupted by injuries, he announced that he would retire from professional tennis at the end of the 2026 season.

Early Life

Kei Nishikori was born on December 29, 1989, in Matsue, Shimane Prefecture, Japan. His father, Kiyoshi, was an engineer, and his mother, Eri, was a piano teacher. He grew up with an older sister named Reina.

Nishikori began playing tennis at the age of five after his father returned from a trip to the United States with a children's racket. He quickly emerged as one of Japan's leading junior players and won the Japanese national junior championship.

At 14, Nishikori moved to Florida to train at IMG Academy in Bradenton. His move was financed through the Masaaki Morita Tennis Fund, which supported promising Japanese players seeking elite training abroad. Nishikori did not speak English when he arrived, but he remained in Florida and developed the aggressive baseline game that eventually carried him into the world's top five.

First ATP Title

Nishikori turned professional in 2007. The following year, he entered the Delray Beach Open as a qualifier ranked outside the world's top 200.

After advancing through qualifying and the main draw, the 18-year-old Nishikori defeated American James Blake in the final to win his first ATP Tour title. The victory made him the first Japanese man to win an ATP singles tournament in nearly 16 years.

His early momentum was interrupted by an elbow injury that required surgery and kept him out for most of the 2009 season. Nishikori returned to competition in 2010 and gradually rebuilt his ranking.

In 2012, he reached the Australian Open quarterfinals and won the Japan Open in Tokyo. He became the first Japanese man to capture the tournament, defeating Milos Raonic in the final.

Rise to the Top 10

Nishikori won the Memphis tournament in 2013 and successfully defended the title in 2014. He also captured the 2014 Barcelona Open, demonstrating that his game could succeed on clay as well as hard courts.

That season marked his arrival among the sport's elite. Nishikori reached the final of the Madrid Open and entered the US Open as the tenth seed.

His path through the tournament included a five-set victory over Raonic that ended in the early hours of the morning, followed by another five-set win against Stan Wawrinka. In the semifinals, Nishikori defeated Djokovic in four sets to become the first Asian man to reach a Grand Slam singles final.

Nishikori lost the championship match to Čilić, but his run transformed him into a national sports hero in Japan and one of the most commercially valuable tennis players in the world.

He finished 2014 by qualifying for the ATP Finals and advancing to the semifinals. Nishikori won four tournaments during the season, including titles in Memphis, Barcelona, Kuala Lumpur, and Tokyo.

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World No. 4 and Olympic Bronze

Nishikori rose to world No. 4 in March 2015, the highest ranking achieved by a Japanese man during the Open Era. He defended his titles in Memphis and Barcelona and added a championship in Washington, D.C.

In 2016, he won Memphis for the fourth consecutive year and again reached the semifinals of the ATP Finals. He also advanced to the US Open semifinals after defeating Andy Murray in five sets.

Nishikori represented Japan at the Rio Olympics, where he defeated Rafael Nadal in the bronze-medal match. The victory gave Japan its first Olympic tennis medal in 96 years.

Although Nishikori never won a Grand Slam championship or an ATP Masters 1000 title, he repeatedly advanced deep into the sport's largest tournaments during an era dominated by Djokovic, Nadal, Roger Federer, and Andy Murray.

Injuries and Comebacks

Injuries became an increasingly significant part of Nishikori's career. A wrist injury ended his 2017 season, while an elbow problem required surgery after the 2019 US Open.

He returned to competition but later underwent hip surgery, which kept him out for the entire 2022 season. Nishikori made another comeback in 2023 and won an ATP Challenger tournament in Puerto Rico in his first event in approximately 20 months.

In January 2025, Nishikori reached the final of the Hong Kong Open, his first ATP Tour final in six years. He also returned to the world's top 100 and recorded his 450th tour-level victory, becoming the first Asian player to reach that milestone.

Persistent physical problems continued to limit his schedule. In April 2026, Nishikori announced that he would retire at the conclusion of the season.

Career Earnings

Kei Nishikori earned more than $26 million in official ATP prize money during his professional career. That figure includes singles and doubles winnings but does not include endorsements, appearance fees, exhibitions, or performance bonuses paid by sponsors.

His largest tournament payday came from finishing second at the 2014 US Open. Nishikori also collected substantial prize money through his 12 ATP titles, repeated Grand Slam quarterfinal appearances, Masters 1000 finals, and multiple qualifications for the ATP Finals.

Tournament prize money represents gross earnings. Players are responsible for expenses including coaches, trainers, physical therapists, travel, accommodation, management commissions, and taxes in the countries where they compete.

Endorsements

Nishikori's commercial earnings significantly exceeded his tournament winnings. His historic success and enormous popularity in Japan made him one of tennis's most heavily sponsored players.

He became a Uniqlo global brand ambassador in 2011. In 2016, he signed a five-year extension with the apparel company that was valued at approximately $50 million.

His other sponsors have included Wilson, Nissin Foods, Japan Airlines, TAG Heuer, Jaguar, Nike, Asahi, NTT, Procter & Gamble, Lixil, and Japanese broadcaster Wowow. Japan Airlines even placed Nishikori's image on an aircraft known as "JET-KEI."

At the height of his career, Nishikori regularly earned approximately $30 million or more per year from endorsements. In 2019, he earned an estimated $37.3 million, including $33 million from sponsors.

Personal Life

Nishikori married his longtime partner, Mai Yamauchi, in December 2020. The couple welcomed their first child in 2021 and later had a second child. They held a wedding ceremony and reception in 2022 after pandemic restrictions had prevented them from celebrating with family and friends earlier.

Nishikori has continued training at IMG Academy in Florida while maintaining close professional and commercial ties to Japan.

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