Kei Nishikori

Kei Nishikori is a Japanese professional tennis player. He is the only Japanese man in the Open Era to have been ranked in the top five in singles, reaching his career-high ranking of world No. 4 in March 2015, and the second man in history to do so after Jiro Sato. Nishikori has won twelve titles on the ATP Tour and was runner-up at the 2014 US Open, making him the only man representing an Asian country to contest a major singles final. He also became the first man from Asia to qualify for the ATP Finals, reaching the semifinals in 2014 and 2016.