Japan's Kei Nishikori advanced to the second round of the Australian Open on Sunday for the first time since he was a 2019 quarterfinalist with a five-set win over Brazilian qualifier Thiago Monteiro.

As former world No. 4 tennis star Kei Nishikori mulls over a dismal 2020 due to surgery and contracting the novel coronavirus, he finds hope from looking back two years ago. He was in a similar ...

Monte Carlo, Principality of Monaco: Kei Nishikori fought back from a set down to beat Alexander Zverev 3-6, 6-3, 6-4 in the Monte Carlo Masters semi-finals on Saturday to set up a showdown with ...

Japan's Kei Nishikori reached the Hong Kong Tennis Open semifinals on Friday after beating 49th-ranked Cameron Norrie of Britain 6-3, 3-6, 6-2 at the ATP 250 tournament. The 35-year-old former ...