Ratings
KOYAMA Masako (Japan)
Japanese name(s): 小山雅子1 tournaments
5 results
Player ID: 16350
Rated 861 in Japan and 1182 in Asia&Oceania&Africa and 1602 in the World
Latest rating: 867
5 results
Player ID: 16350
Rated 861 in Japan and 1182 in Asia&Oceania&Africa and 1602 in the World
Latest rating: 867
2025-06-15: 41_Hiroshima_open(Japan)
| KOYANAGI Kouhiro | 49-15 | KOYAMA Masako |
| KOYAMA Masako | 50-14 | IWAMOTO Saki |
| TANAKA Tetsuya | 41-23 | KOYAMA Masako |
| KAMEMOTO Osamu | 55-09 | KOYAMA Masako |
| USHIRO Hideaki | 49-15 | KOYAMA Masako |