Kouyama, Ryu
Current rating: 1470
Record: 12-15-3
| Grand Prix Yokohama 2019 (modern) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 228 | Takagishi, Hidefumi (1484) | Won 2-0 | +181461 |
| 2modern | 157 | Itou, Manabu (1559) | Won 2-1 | +201481 |
| 3modern | 517 | Kubota, Sin (1544) | Lost 0-2 | -171464 |
| 4modern | 531 | Harita, Naoki (1542) | Lost 1-2 | -161448 |
| 5modern | 774 | O, Minami (1497) | Won 2-0 | +191467 |
| 6modern | 349 | Mitoya, Taku (1536) | Won 2-1 | +191486 |
| 7modern | 400 | Hiruta, Noriaki (1575) | Lost 1-2 | -161470 |
| top | average opponent: 1534record: 4-3 | new rating: 1470 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 357 | Nanjo, Takashi (1500) | Draw 1-1 | +11455 |
| 2legacy | 353 | Hiyama, Seiya (1451) | Won 2-0 | +171472 |
| 4legacy | 156 | Regalado, Mikhail (1486) | Won 2-0 | +191491 |
| 5legacy | 77 | Arita, Kazuhiro (1640) | Lost 0-2 | -161475 |
| 6legacy | 192 | Nishimura, Masateru (1594) | Lost 0-2 | -151460 |
| 7legacy | 300 | Yamamoto, Masaki 1920 (1516) | Lost 0-2 | -171443 |
| top | average opponent: 1531record: 2-3-1 | new rating: 1443 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 432 | Shimazu, Yoshiki (1629) | Lost 0-2 | -141426 |
| 3modern | 1071 | Nekomiya, Kagenaga (1501) | Won 2-0 | +191445 |
| 4modern | 666 | Yamasaki, Takuya (1520) | Lost 0-2 | -171428 |
| 5modern | 942 | Toba, Syuuji (1501) | Won 2-1 | +201448 |
| 6modern | 720 | Takiguchi, Yuta (1570) | Lost 1-2 | -161432 |
| 7modern | 957 | Nishioka, Hideaki (1497) | Won 2-1 | +191451 |
| 8modern | 505 | Sasagawa, Hitoshi (1432) | Won 2-1 | +181469 |
| 9modern | 370 | Hyodo, Kosuke (1628) | Lost 1-2 | -151454 |
| top | average opponent: 1535record: 4-4 | new rating: 1454 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 305 | Uchiyama, Masataka (1500) | Lost 0-2 | -181440 |
| top | record: 0-1 | new rating: 1440 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 303 | Mori, Junichi (1500) | Draw 1-1 | 01500 |
| 2standard | 756 | Matsushima, Naoki (1246) | Won 2-0 | +131513 |
| 3standard | 788 | Taniguchi, Yu (1462) | Lost 0-2 | -181495 |
| 4standard | 1080 | Nohara, Hiromitsu (1465) | Lost 0-2 | -191476 |
| 5standard | 1278 | Masudate, Sadaharu (1531) | Won 2-1 | +191495 |
| 6standard | 984 | Ishizaka, Akira (Gunma) (1501) | Lost 0-2 | -181477 |
| 7standard | 1133 | Kurokawa, Ryushi (1479) | Draw 1-1 | 01477 |
| 8standard | 1021 | Takahashi, Takuya (1390) | Lost 0-2 | -191458 |
| top | average opponent: 1447record: 2-4-2 | new rating: 1458 | ||