Kato, Kei
Current rating: 1428
Record: 9-14
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 196 | Mukai, Shinichi (1391) | Won 2-1 | +171461 |
| 2sealed | 72 | Hoshino, Hiroyuki (1545) | Won 2-1 | +191480 |
| 3sealed | 120 | Miyamori, Junya (1537) | Won 2-0 | +191499 |
| 4sealed | 117 | Sasaki, Yuuichirou (1554) | Lost 1-2 | -171482 |
| 5sealed | 189 | Oonishi, Takahisa (1519) | Won 2-0 | +191501 |
| 6sealed | 115 | Ikeda, Hiroaki (1483) | Lost 0-2 | -181483 |
| 7sealed | 97 | Lee, Sung-Bum (1550) | Lost 1-2 | -171466 |
| 8sealed | 319 | Katsura, Daichi (1514) | Lost 0-2 | -171449 |
| 9sealed | 334 | Katsu, Masahiro (1320) | Lost 1-2 | -211428 |
| top | average opponent: 1490record: 4-5 | new rating: 1428 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1415 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 41 | Mizuno, Kunihiko (1521) | Won 2-1 | +201435 |
| 3sealed | 152 | Takeda, Hiroki (1510) | Lost 1-2 | -161419 |
| 4sealed | 225 | Yamada, Hiroki (1422) | Won 2-1 | +181437 |
| 5sealed | 208 | Takahashi, Kenji (1504) | Won 2-1 | +191456 |
| 6sealed | 79 | Tsuba, Yuuki (1605) | Lost 1-2 | -151441 |
| 7sealed | 151 | Satou, Naoki (1573) | Lost 0-2 | -161425 |
| 8sealed | 219 | Urasawa, Taiji (1461) | Won 2-1 | +191444 |
| top | average opponent: 1514record: 4-3 | new rating: 1444 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1466 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 54 | Kihara, Ryou (1569) | Lost 0-2 | -161450 |
| 2standard | 287 | Toshiyuki H., (1481) | Lost 1-2 | -171433 |
| 3standard | 319 | Kanemaru, Daiki (1464) | Lost 1-2 | -181415 |
| top | average opponent: 1505record: 0-3 | new rating: 1415 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 207 | I., Kenji (1500) | Won 2-1 | +181518 |
| 2extended | 34 | Taniguchi, Hiroaki (1562) | Lost 0-2 | -171501 |
| 3extended | 180 | Kato, Takanori (1463) | Lost 0-2 | -191482 |
| 4extended | 294 | Yano, Kunihiro (1601) | Lost 1-2 | -161466 |
| top | average opponent: 1532record: 1-3 | new rating: 1466 | ||