Yamasaki, Ippei
Current rating: 1401
Record: 10-17
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 305 | Shigemasa, Gaku (1506) | Lost 0-0 | -171428 |
| 2sealed | 204 | Yamaguchi, Tetsuya (1512) | Won 2-1 | +191447 |
| 3sealed | 136 | Yashiki, Kouichi (1479) | Won 2-1 | +191466 |
| 4sealed | 163 | Tsukagoshi, Tadaki (1391) | Lost 0-2 | -191447 |
| 5sealed | 161 | Motoyama, Kazuhiko (1674) | Lost 1-2 | -141433 |
| 6sealed | 39 | Sumita, Masanobu (1592) | Lost 0-2 | -151418 |
| 7sealed | 172 | Takahashi, Teo (1513) | Lost 1-2 | -171401 |
| top | average opponent: 1524record: 2-5 | new rating: 1401 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 90 | Fujimoto, Takehiro (Hyogo) (1463) | Won 2-1 | +191450 |
| 2sealed | 73 | Tanaka, Hisaya (1656) | Lost 1-2 | -141436 |
| 3sealed | 120 | Imai, Kimio (1547) | Lost 1-2 | -161420 |
| 4sealed | 118 | Yamao, Kouichi (1481) | Lost 1-2 | -171403 |
| 5sealed | 137 | Yamasaki, Sadaharu (1357) | Won 2-0 | +171420 |
| 6sealed | 110 | Hisaki, Yuu (1488) | Won 2-0 | +191439 |
| 7sealed | 30 | Ueno, Takamasa (1524) | Won 2-0 | +201459 |
| 8sealed | 83 | Nomura, Eiji (1691) | Lost 1-2 | -141445 |
| top | average opponent: 1526record: 4-4 | new rating: 1445 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 198 | Nishizawa, Tsuneyoshi (1500) | Won 2-1 | +191462 |
| 2standard | 137 | Bandou, Junichirou (1672) | Lost 1-2 | -141448 |
| 3standard | 184 | Iioka, Kayoko (1335) | Won 2-0 | +161464 |
| 4standard | 137 | Kawano, Junya (1599) | Lost 0-2 | -161448 |
| 5standard | 233 | Nakaoka, Shinya (1507) | Lost 0-2 | -171431 |
| top | average opponent: 1522record: 2-3 | new rating: 1431 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 87 | Koen, Yusuke (1558) | Lost 0-2 | -171483 |
| 2sealed | 126 | Chu, Louis (1432) | Lost 0-2 | -191464 |
| 3sealed | 163 | Yoshida, Mitsutaka (1209) | Lost 0-2 | -221442 |
| 4sealed | 190 | Takata, Akira (1444) | Won 2-0 | +181460 |
| 5sealed | 164 | Ueda, Shigeki (1470) | Lost 1-2 | -181442 |
| 6sealed | 147 | Yano, Ryuji (1527) | Lost 1-2 | -171425 |
| 7sealed | 125 | Oota, Hidekazu (1407) | Won 2-0 | +181443 |
| top | average opponent: 1435record: 2-5 | new rating: 1443 | ||