NEW YORK (AP) Kei Nishikori has retired from his first-round match at the U.S. Open because of a lower back injury. Flavio Cipolla was leading 6-4, 6-2 on Monday when Nishikori retired.

Japan's Kei Nishikori retired from his French Open tennis second-round match with a sore right shoulder Thursday after dropping the first two sets to rising U.S. star Ben Shelton 7-6(7), 6-4.

NEW DELHI: Japanese tennis player Kei Nishikori, formerly ranked as ... which was further delayed by rain after beginning on Wednesday. Nishikori retired after losing the first two sets to Shelton.

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 ...

Japan’s Kei Nishikori feels like he is in the second stage of his career after the last few years were interrupted by injuries but the 31-year-old says his goal remains to get back to the top ...

Retired tennis star Andy Murray will talk about his pro career during a four-show theater tour in Scotland and England in ...

Kei Nishikori took full advantage of a seemingly ... In Miami last year, he went crashing down during a slide against Tomas Berdych, and retired. One thing they do not share is expectations.

On Sunday, Kei Nishikori (No. 143 in the world) meets Jack Draper (No. 19) in the Round of 32 at the Erste Bank Open. In his last outing, Nishikori fell to Holger Vitus Nodskov Rune 6-3 ...

Kei Nishikori (No. 200 ranking) will meet Holger Vitus Nodskov Rune (No. 14) in the quarterfinals at the Rakuten Japan Open Tennis Championships on Sunday, September 29. Watch tennis, other live ...

Kei Nishikori’s former coach explains why the defensive backhand slice is the ace in the pack for top tennis players.

In the Round of 32 at the Rakuten Japan Open Tennis Championships on Wednesday, Marin Cilic (ranked No. 373) meets Kei Nishikori (No. 200). Cilic’s last match was a win, 6-4, 7-6, over Brandon ...

Nishikori's comeback this year has been punctured with recurring injury breaks. A quarterfinal finish at the Canadian Open has been the highlight of his season so far. He also made the last eight ...