The Relationship Between Concentration, Achievement Motivation, and Academic Stress in Tennis Student Athletes. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, [S. l.], v. 17, n. 1, p. 160–168, 2025. DOI: 10.26858/cjpko.v17i1.70927. Disponível em: https://competitor.idjournal.eu/index.php/competitor/article/view/182. Acesso em: 18 jul. 2025.