“The Level of Mastery of Basic Volleyball Skills: An Empirical Study of the Women’s Volleyball Team at Universitas Muhammadiyah Surakarta”. COMPETITOR: Jurnal Pendidikan Kepelatihan Olahraga, vol. 18, no. 1, May 2026, pp. 0379-92, https://doi.org/10.26858/cpjok.v18i1.526.