Arima, Kengo
Current rating: 1500
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1476 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 442 | Ono, Ikumi (1424) | Won 2-1 | +171493 |
| 2pioneer | 382 | Miyamoto, Akihiro (1576) | Won 2-1 | +201513 |
| 3pioneer | 355 | Shimizu, Ryouta (1765) | Won 2-1 | +221535 |
| 4pioneer | 169 | Toyohara, Eisuke (1346) | Lost 1-2 | -211514 |
| 5pioneer | 311 | Akai, Satoshi (1619) | Lost 1-2 | -161498 |
| 6pioneer | 466 | Ichikawa, Tatsuya 3238 (1569) | Won 2-1 | +191517 |
| 7pioneer | 218 | Tokitsu, Hiroshi (1556) | Lost 0-2 | -171500 |
| top | average opponent: 1551record: 4-3 | new rating: 1500 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 366 | Suzuki, Takuma (1507) | Lost 0-2 | -171451 |
| 2standard | 527 | Nakamatu, Hirohumi (1500) | Won 2-0 | +191470 |
| 3standard | 631 | Zhao, Jin (1559) | Won 2-1 | +191489 |
| 4standard | 305 | Meki, Syunta (1546) | Lost 0-2 | -171472 |
| 5standard | 469 | Kiyofuji, Kazuya (1525) | Won 2-1 | +191491 |
| 6standard | 316 | Kamo, Keisuke (1651) | Lost 0-2 | -151476 |
| top | average opponent: 1548record: 3-3 | new rating: 1476 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 158 | Kasai, Yuuki (1540) | Lost 1-2 | -171483 |
| 2standard | 1023 | Matsuyama, Satoshi (1677) | Won 2-1 | +211504 |
| 3standard | 1050 | Chen, Chun Lin (1484) | Lost 0-2 | -181486 |
| 4standard | 1460 | Price, Debbie (1464) | Won 2-1 | +171503 |
| 5standard | 1197 | Takano, Hayato (1552) | Lost 1-2 | -171486 |
| 6standard | 1130 | Omi, Akeshi (1481) | Lost 1-2 | -181468 |
| top | average opponent: 1533record: 2-4 | new rating: 1468 | ||