Yasui, Koichi
Current rating: 1538
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 19 | Kitagawa, Shinsuke (1518) | Won 2-0 | +181534 |
| 3sealed | 7 | Umeno, Yoshihiro (1641) | Lost 1-2 | -161518 |
| 4sealed | 91 | Kaneko, Takefumi (1533) | Won 2-0 | +181536 |
| 5sealed | 39 | Ayama, Takashi (1520) | Draw 1-1 | 01536 |
| 6sealed | 58 | Yuasa, Kentarou (1626) | Won 2-0 | +201556 |
| 7sealed | 37 | Sogabe, Ippei (1582) | Lost 0-2 | -181538 |
| top | average opponent: 1570record: 3-2-1 | new rating: 1538 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 104 | Okada, Ryoji (1518) | Won 2-0 | +181536 |
| 3block | 58 | Deyama, Hirofumi (1505) | Lost 0-2 | -191517 |
| 4block | 305 | Inada, Tsuyoshi (1517) | Won 2-1 | +181535 |
| 5block | 80 | Suga, Takeichi (1473) | Won 2-1 | +171552 |
| 6block | 146 | Ide, Katsuhiro (1534) | Lost 0-2 | -181534 |
| 7block | 117 | Shikatake, Naoki (1535) | Lost 1-2 | -181516 |
| 8block | 222 | Yamabe, Hiroya (1518) | Won 2-0 | +181534 |
| 9block | 132 | Nakagawa, Kazuaki (1535) | Lost 1-2 | -181516 |
| top | average opponent: 1517record: 4-4 | new rating: 1516 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 157 | Takeda, Koji (1498) | Lost 1-2 | -181482 |
| 2sealed | 118 | Fujisawa, Go (1482) | Lost 0-2 | -181464 |
| 3sealed | 202 | Shimizu, Akihiro (1465) | Won 2-0 | +181482 |
| 4sealed | 182 | Kajioka, Makoto (1482) | Won 2-1 | +181500 |
| 5sealed | 131 | Sodeyama, Yohei (1501) | Won 2-0 | +181518 |
| 6sealed | 104 | Yamaoka, Nobuyuki (1520) | Won 2-1 | +181536 |
| 7sealed | 37 | Chuma, Yu (1525) | Lost 1-2 | -181518 |
| top | average opponent: 1496record: 4-3 | new rating: 1518 | ||