His meteoric rise in the rankings over the past two seasons has made Kei Nishikori both a superstar on the court and a valuable commodity off it.
After climbing to No. 4 in the world this season, Nishikori's services are in greater demand than ever. He has been guided well by agent Olivier van Lindonk and IMG, and currently has 14 official sponsors, with home improvement firm Lixil becoming the most recent just last week.
They include: Uniqlo, Nissin, Wilson, Adidas, Weider, Tag Heuer, JACCS, Delta, Jaguar, Asahi, Hisamitsu, IMG Academy, WOWOW and Lixil.