The most impressive part of Kei Nishikori's win was this no-look racket flipKei Nishikori become the first man from Asia to secure a spot in a Grand Slam final, shocking top-ranked Novak Djokovic 6-4, 1-6, 7-6 (4), 6-3, in the U.S. Open. He played two five-set marathons totaling eight and a half hours of tennis ahead of his match with Djokovic, but somehow looked as fresh as when he stepped on the court for his first match. That’s not even the most impressive part. During
