Injury-plagued tennis star Kei Nishikori has committed to play the Delray Beach Open in Florida next February, the event's website said Tuesday. The former world No. 4 last played on the ATP Tour in October 2021 before he underwent hip surgery in January and then injured his right ankle. Nishikori, a winner of 12 ATP Tour singles titles, captured his first at Delray Beach in 2008, defeating James Blake of the United States 3-6, 6-1, 6-4 in the final. The 32-year-old has fallen out of the world rankings.