Coaching to Improve the Accuracy and Effectiveness of Junior Tennis Players’ Shots in the Special Region of Yogyakarta Through the Integration of Training Using a Ball-Launcher and Conventional Training. International Journal of Applied Research and Innovation, [S. l.], v. 1, n. 4, p. 153–166, 2026. DOI: 10.65310/y2qgeh19. Disponível em: https://researchfrontiers.id/resocia/article/view/361. Acesso em: 12 nov. 2026.