Kamei, Toshio
Current rating: 1577
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 738 | Tanaka, Jouji (1596) | Won 2-0 | +191555 |
| 2standard | 627 | Niwano, Yuhei (1518) | Won 2-1 | +181573 |
| 3standard | 608 | Kumura, Kazuya (1588) | Won 2-1 | +181591 |
| 4standard | 247 | Honda, Rintaro (1815) | Lost 1-2 | -141577 |
| 5standard | 410 | Sarusawa, Yuichi (1323) | Won 2-0 | +131590 |
| 6standard | 268 | Maruyama, Yuichiro (1611) | Lost 0-2 | -171573 |
| 7standard | 561 | Deng, Yunan (1752) | Won 2-1 | +211594 |
| 8standard | 458 | Tang, Yu Hsiang (1629) | Lost 1-2 | -171577 |
| top | average opponent: 1604record: 5-3 | new rating: 1577 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 762 | Nishiguchi, Yoshinori (1500) | Lost 1-2 | -191500 |
| 2modern | 873 | Itou, Satosi (1483) | Lost 0-2 | -181482 |
| 3modern | 1261 | Ohashi, Kenta (1538) | Won 2-1 | +191501 |
| 4modern | 1094 | Akiba, Hiroyuki (1449) | Lost 0-2 | -191482 |
| 5modern | 1125 | Narumoto, Kazuya (1461) | Won 2-1 | +181500 |
| 6modern | 1124 | Sakaue, Shota (1482) | Won 2-0 | +171517 |
| 7modern | 714 | Muraoka, Yuki (1556) | Lost 1-2 | -171500 |
| 8modern | 884 | Matsumoto, Kazuya (1522) | Won 2-1 | +181518 |
| 9modern | 744 | Kedo, Yuta (1499) | Won 2-1 | +181536 |
| top | average opponent: 1499record: 5-4 | new rating: 1536 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 556 | Hinai, Kohei (1500) | Won 2-0 | +181518 |
| 2standard | 38 | Murakami, Mikihisa (1506) | Lost 0-2 | -181500 |
| 3standard | 1070 | Mitani, Takashi (1501) | Won 2-1 | +181518 |
| 4standard | 499 | Ogata, Nobuhiko (1645) | Lost 1-2 | -161502 |
| 5standard | 982 | Itou, Kenta (1516) | Lost 0-2 | -181484 |
| 6standard | 1166 | Kawamae, Toshiyuki (1341) | Won 2-1 | +161500 |
| 7standard | 1105 | Nishiyori, Tasuku (1434) | Won 2-0 | +171517 |
| 8standard | 650 | Anzai, Yuusuke (1617) | Lost 0-2 | -171500 |
| 9standard | 803 | Kinoshita, Yuhei (1514) | Won 2-0 | +191519 |
| top | average opponent: 1508record: 5-4 | new rating: 1519 | ||