Kei Nishikori ended his 2017 season earlier than planned, in August, due to a wrist injury. The Japanese is currently trying to make his way to the top of the ranking, but he is still outside the top-20 of the ATP rankings.
Still, Nishikori continues to rake in money from endorsements, having earned $33 million (and just $1.6 million from prize money) from 31st May 2017 to 31st May 2018. Just think that the 16-time Grand Slam winner Rafael Nadal earned only $27 million from endorsements, about $6 million fewer than the Japanese.
Being the main face of the 2020 Tokyo Olympics, Nishikori renewed deals with several Japanese brands – Nissin, Lixil, Japan Airlines, Asahi, NTT – and he is also contracted with Nike, Wilson, Uniqlo and Tag Heuer, among others.
Source: Forbes ALSO READ: Revealed: date of Roger Federer's first match in Stuttgart