Sakai, Riku
Current rating: 1403
Record: 8-15-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 352 | Inukai, Yuta (1465) | Lost 0-2 | -171397 |
| 4pioneer | 302 | Sahara, Kohei (1517) | Lost 1-2 | -161381 |
| 5pioneer | 452 | Hirano, Fumichika (1374) | Won 2-0 | +181399 |
| 6pioneer | 511 | Fujita, Shinpei (1463) | Lost 0-2 | -161383 |
| 7pioneer | 407 | Kim, Namhun (1497) | Won 2-0 | +201403 |
| top | average opponent: 1463record: 2-3 | new rating: 1403 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 37 | Ootani, Yousuke (1684) | Lost 0-2 | -141448 |
| 4standard | 425 | Kagami, Hajime (1638) | Lost 1-2 | -151433 |
| 5standard | 499 | Yokomizo, Gouki (1396) | Lost 0-2 | -191414 |
| top | average opponent: 1573record: 0-3 | new rating: 1414 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 301 | Nagoya, Ryouta (1450) | Won 2-1 | +181488 |
| 4sealed | 19 | Oomura, Takashi (1649) | Lost 1-2 | -151473 |
| 5sealed | 344 | Matsui, Hisataka (1625) | Lost 1-2 | -151458 |
| 6sealed | 618 | Yanai, Yuji (1529) | Won 2-1 | +191477 |
| 7sealed | 329 | Nagao, Naoki (1621) | Lost 0-2 | -151462 |
| top | average opponent: 1575record: 2-3 | new rating: 1462 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 387 | De Petro, Alexander (1511) | Won 2-0 | +191482 |
| 3standard | 465 | Kimura, Kenta (1491) | Won 2-0 | +181500 |
| 4standard | 262 | Kojima, Yoshifumi (1505) | Lost 1-2 | -181482 |
| 5standard | 570 | Kitaoka, Takaaki (1712) | Won 2-0 | +221504 |
| 6standard | 359 | Harada, Masato (1579) | Lost 1-2 | -171487 |
| 7standard | 556 | Sato, Kimihiko (1555) | Lost 1-2 | -171470 |
| top | average opponent: 1559record: 3-3 | new rating: 1470 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 62 | Nakamura, Yuu (1518) | Won 2-1 | +181518 |
| 2standard | 468 | Ooya, Fumihiro (1546) | Lost 0-2 | -171501 |
| 3standard | 1092 | Sugiyama, Kendai (1501) | Draw 1-1 | 01501 |
| 4standard | 916 | Takeyama, Maya (1445) | Lost 1-2 | -191482 |
| 5standard | 1068 | Satou, Marin (1416) | Lost 0-2 | -191463 |
| top | average opponent: 1485record: 1-3-1 | new rating: 1463 | ||