Earlier today, Kei Nishikori beat Novak Djokovic (ranked No. 1 in singles) in the semifinals of the U.S. Open, making him the first Asian male to reach a Grand Slam singles final.
Nishikori is hoping to join China's Li Na, the first Asian female to win a Grand Slam singles title, as a trendsetter in Asian tennis.
He is already the highest-ranked Japanese male in the Open Era, although he is still behind Japanese trailblazer Kimiko Date-Krumm, who reached no. 4 on the women's tour in the '90s.
Nishikori will play against the winner of today's second semifinal between Roger Federer and Marin Cilic on Monday.
The last Japanese man to reach a Grand Slam semifinal did so in 1933, not 1918 as this article had previously stated.