Nishikori falls in final US Open match: 'I couldn't play my best today'

Kei Nishikori was defeated in what he described as his final US Open appearance, citing an inability to perform at his best level during the match. The Japanese tennis veteran reflected on his performance with disappointment, acknowledging that the conditions or his physical state prevented him from showcasing his full capabilities. The loss marks a poignant end to Nishikori's chapter at the US Open, a tournament where he famously reached the final in 2014.