Hiromasa Koyama
Region
Japan
Age
17
Birthplace
Japan
Coach
-
Ranking
166
Win-loss record
*The men's category includes ITF, ATP and Davis Cup professional level results, while the women's category includes ITF, WTA and Billie Jean King Cup professional level results.Independent calculations for juniors.
Overall
Wins: -
Losses: -
Clay
Wins: -
Losses: -
Hard
Wins: -
Losses: -
Others
Wins: -
Losses: -