Mezaki, Kouichi
Current rating: 1389
Record: 7-14-1
| Grand Prix Kobe 2014 (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 9 | Watanabe, Kenji (1525) | Lost 0-2 | -171422 |
| 3modern | 384 | Matsuyama, Takuya (1465) | Lost 0-2 | -171405 |
| 4modern | 409 | Tomizawa, Shoudai (1503) | Lost 1-2 | -161389 |
| top | average opponent: 1498record: 0-3 | new rating: 1389 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 46 | Tanaka, Yasunori (1500) | Won 2-0 | +181487 |
| 2block | 56 | Tsuchiya, Heinrich (1577) | Lost 0-2 | -161471 |
| 3block | 145 | Yamaguchi, Yuuichi (1581) | Lost 0-2 | -161455 |
| 4block | 191 | Okutomi, Hiromitsu (1499) | Won 2-0 | +191474 |
| 5block | 173 | Kawachi, Yusuke (1501) | Lost 1-2 | -181456 |
| 6block | 158 | Tanaka, Eiji (1480) | Lost 1-2 | -171439 |
| top | average opponent: 1523record: 2-4 | new rating: 1439 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 207 | Mori, Junpei (1518) | Won 2-0 | +191521 |
| 3block | 58 | Kushibe, Toshiki (1485) | Lost 1-2 | -191502 |
| 4block | 120 | Senba, Kotaro (1523) | Draw 0-0 | 01502 |
| 5block | 176 | Ikedo, Masakazu (1575) | Lost 0-2 | -161486 |
| 6block | 235 | Kitano, Tetsuya (1530) | Lost 1-2 | -171469 |
| top | average opponent: 1526record: 1-3-1 | new rating: 1469 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Yoshita, Naohiro (1500) | Lost 1-2 | -181482 |
| 2sealed | 206 | Hirasa, Kazuaki (1464) | Won 2-0 | +181500 |
| 3sealed | 213 | Rikuno, Keito (1611) | Lost 0-2 | -161484 |
| 4sealed | 243 | Saito, Yoshihide (1433) | Won 2-1 | +171501 |
| 5sealed | 213 | Ota, Koichi (1484) | Won 2-0 | +171518 |
| 6sealed | 99 | Lee, Sang-Ryeol (1500) | Won 2-0 | +181536 |
| 7sealed | 60 | Arahori, Kazuaki (1655) | Lost 0-2 | -161520 |
| 8sealed | 66 | Ikuta, Tatsuya (1527) | Lost 1-2 | -181502 |
| top | average opponent: 1522record: 4-4 | new rating: 1502 | ||