British men's number two Cameron Norrie was knocked out of the Hong Kong Open as veteran Japanese opponent Kei Nishikori reached his first ATP semi-final in almost four years.
Norrie, 29, lost 3-6 6-3 2-6 against 35-year-old Nishikori, who is just outside of the world's top 100 after suffering a catalogue of injuries over the past three seasons.
Norrie, ranked 49th, is aiming to rediscover the form which took him into the top 10 in 2022.
Last year, he struggled with form and fitness before finishing the season on a positive note by reaching the Moselle Open final in Metz.