Jindo, Takashi, Daisuke Mitsuhashi, and Tatsumasa Kubota. “Accuracy of Subjective Stats of Key Performance Indicators in Tennis”. International Journal of Racket Sports Science 4, no. 2 (March 22, 2025). Accessed February 8, 2026. https://revistaseug.ugr.es/index.php/IJRSS/article/view/33262.