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.

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 ...

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.

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

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 ...

Jack Draper marked his comeback from injury with victory over Kei Nishikori as Dominic Thiem’s tennis career came to an end on home soil at the Erste Bank Open. Draper, who retired during his ...

Stefanos Tsitsipas (No. 12 ranking) will meet Kei Nishikori (No. 153) in the Round of 64 of the Rolex Shanghai Masters on Thursday, October 3. Tsitsipas was last in action on September 25 ...

Holger Rune in action at the 2024 Western & Southern Open (Picture: Getty) Sixth seed Holger Rune will lock horns with home favorite Kei Nishikori in a highly anticipated quarterfinal clash at the ...

Denmark's Holger Rune fought back from a match point down to reach the Japan Open semifinals after beating Kei Nishikori 3-6 ... Humbert advanced after his British opponent Jack Draper retired early ...