Mizoguchi, Koichi
Current rating: 1519
Record: 4-3
| Grand Prix Sapporo 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3 | Shizuki, Kazue (1500) | Won 2-0 | +181518 |
| 2sealed | 5 | Anabuki, Kazuhisa (1500) | Lost 0-2 | -181500 |
| 3sealed | 88 | Yamamoto, Shin (1500) | Lost 0-2 | -181482 |
| 4sealed | 94 | Jinushi, Noriyoshi (1482) | Won 2-1 | +181500 |
| 5sealed | 88 | Abe, Takaaki (1499) | Lost 1-2 | -181482 |
| 6sealed | 96 | Kawashima, Kazuya (1480) | Won 2-1 | +181500 |
| 7sealed | 65 | Kita, Makoto (1579) | Won 2-1 | +191519 |
| average opponent: 1506record: 4-3 | new rating: 1519 | |||