Watanabe, Kai
Current rating: 1617
Record: 18-12
| Grand Prix Yokohama 2019 (modern) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 352 | Yamamoto, Yoshiaki (1500) | Won 2-0 | +171541 |
| 2modern | 161 | Li, Ming Siang (1560) | Lost 0-2 | -171524 |
| 3modern | 908 | Yang, Jeff (1494) | Won 2-0 | +171541 |
| 4modern | 712 | Kato, Shota (1518) | Won 2-0 | +181559 |
| 5modern | 335 | Akiba, Kiyokazu (1538) | Won 2-1 | +171576 |
| 6modern | 216 | Hirokawa, Tatsuya 2023 (1555) | Lost 0-2 | -181558 |
| 7modern | 392 | Matsumoto, Keiichiro (1580) | Won 2-0 | +181576 |
| 8modern | 237 | Sorada, Shohei (1665) | Won 2-0 | +201596 |
| 9modern | 149 | Brunton, David (1582) | Lost 0-2 | -181578 |
| 10modern | 208 | Liu, Jin 8012 (1603) | Won 2-0 | +181596 |
| 11modern | 139 | Yanagitani, Kaname (1582) | Won 2-1 | +181614 |
| 12modern | 62 | Park, Sangwook (1710) | Lost 1-2 | -161598 |
| 13modern | 124 | Makino, Hiroyuki (1639) | Lost 1-2 | -181580 |
| 14modern | 165 | Liu, Yi Pang (1665) | Won 2-0 | +201600 |
| 15modern | 127 | Nagao, Taku (1550) | Won 2-0 | +171617 |
| average opponent: 1583record: 10-5 | new rating: 1617 | |||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 332 | Mizumoto, Shigenori (1500) | Won 2-0 | +181518 |
| 2legacy | 323 | Hayakawa, Yohei (1518) | Lost 1-2 | -181500 |
| 3legacy | 950 | Sugiura, Toshitaka (1501) | Won 2-0 | +181518 |
| 4legacy | 653 | Yoshida, Atsushi (1462) | Lost 0-2 | -191499 |
| 5legacy | 598 | Morimoto, Yutaro (1492) | Won 2-1 | +181517 |
| 6legacy | 592 | Biaggi, Andrea (1536) | Lost 1-2 | -181499 |
| 7legacy | 805 | Soma, Kensuke (1462) | Won 2-0 | +181517 |
| 8legacy | 500 | Shiura, Takefumi (1428) | Won 2-1 | +161533 |
| 9legacy | 305 | Kimura, Yu (1601) | Won 2-1 | +191552 |
| 10legacy | 178 | Huang, Hao-Shan (1821) | Won 2-1 | +231575 |
| 11legacy | 173 | Mialaret, Gary (1775) | Lost 0-2 | -141561 |
| 12legacy | 204 | Yamaguchi, Minami (1512) | Lost 1-2 | -191542 |
| 13legacy | 257 | Heshiki, Tatsuki (1541) | Lost 1-2 | -181524 |
| 14legacy | 261 | Noto, Yoshinari (1387) | Won 2-1 | +151539 |
| 15legacy | 249 | Azaret, David (1683) | Lost 1-2 | -151524 |
| average opponent: 1548record: 8-7 | new rating: 1524 | |||