Khimenes, K., Briskin, Y., Pityn, M. і Malanyuk, L. 2023. FORMATION OF COMPETITION SYSTEM COMPONENTS IN PROFESSIONAL TENNIS BEFORE THE BEGINNING OF THE "TENNIS OPEN ERA". Спортивна наука та здоров’я людини. 1(9) (Чер 2023). DOI:https://doi.org/10.28925/2664-2069.2023.111.