Hirayama, Souta
Current rating: 1507
Record: 5-5
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 195 | Watanabe, Takuya (1500) | Won 2-0 | +181543 |
| 2sealed | 49 | Hata, Takahiro (1517) | Lost 1-2 | -191524 |
| 3sealed | 296 | Nakata, Tatsuya (1539) | Lost 1-2 | -171507 |
| average opponent: 1519record: 1-2 | new rating: 1507 | |||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 158 | Yabuki, Shunichi (1570) | Won 2-0 | +191519 |
| 2modern | 132 | Satou, Katsuya (1518) | Won 2-1 | +181537 |
| 3modern | 100 | Ozawa, Takahiro (1692) | Lost 0-2 | -151522 |
| 4modern | 206 | Omonishi, Kojiro (1507) | Won 2-1 | +181540 |
| 5modern | 116 | Mochizuki, Yuusuke (1573) | Won 2-0 | +181558 |
| 6modern | 127 | Ushijima, Masaki (1726) | Lost 0-2 | -151543 |
| 7modern | 171 | Ooneda, Yoshihiro (1533) | Lost 0-2 | -181525 |
| average opponent: 1588record: 4-3 | new rating: 1525 | |||