Reaching a career-high singles ranking of world No. 4, Kei Nishikori established himself as the most successful Japanese male tennis player of the Open Era. He remains the only man representing an Asian country to compete in a major singles final, an achievement earned during his notable performance at the 2014 US Open.
Early Development and Relocation
Born in 1989 in Matsue, Japan, Nishikori began playing tennis at five. By 2001, he won the All Japan Tennis Championships for Kids. Seeking professional advancement, he moved to Bradenton, Florida, in 2004 to join the IMG Academy at age 14. His junior career included a boys' doubles title at the 2006 French Open and a career-high combined world ranking of No. 7.
Professional Breakthrough
Nishikori turned professional and quickly ascended the ATP rankings. In 2008, he secured his first ATP title at the Delray Beach tournament as a qualifier, defeating James Blake in the final. That same year, he reached the round of 16 at the US Open after upsetting David Ferrer, marking the first time a Japanese player had achieved that milestone in 71 years.
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His 2014 US Open campaign included a victory over Novak Djokovic, leading to a runner-up finish. In 2016, he defeated Rafael Nadal to capture the bronze medal at the Rio Olympics, providing Japan with its first tennis medal in 96 years. He is recognized for his competitive tenacity, holding a 72.4% win percentage in deciding sets during the Open Era.
Professional Conduct
Throughout his career, Nishikori worked with multiple coaches, including Brad Gilbert, Michael Chang, and Thomas Johansson. He married Mai Yamauchi in 2020, with whom he shares a son. In 2025, following allegations regarding his personal conduct and an affair with Azuki Oguchi, he issued a public statement apologizing for his actions.
Fast facts
- Born: 1989, Matsue, Japan
- Career-high ranking: World No. 4
- 2014 US Open: Singles runner-up
- 2016 Rio Olympics: Singles bronze medalist
- ATP singles titles: 12
- Turning professional: 2007
- Education: Aomori-Yamada High School
Questions readers ask
What is Kei Nishikori's highest world ranking?
He reached a career-high singles ranking of world No. 4.
Did Kei Nishikori win an Olympic medal?
Yes, he won a bronze medal in singles at the 2016 Rio Olympics.
Which major final did he reach?
He was the runner-up at the 2014 US Open.
Achievements
- Competed at the 2020 Summer Olympics
- Competed at the 2008 Summer Olympics
- Competed at the 2012 Summer Olympics
- Competed at the 2016 Summer Olympics
