Japan’s Kei Nishikori to retire at end of 2026 season
Nishikori, who started his professional career in 2007, won 12 ATP Tour titles and has been playing on the Challenger Tour tour this year. He last competed on the main ATP Tour at the Cincinnati Open in August 2025. One of Nishikori’s most notable wins was beating 24-time Grand Slam champion Novak Djokovic in the…