Yamasaki, Youhei
Current rating: 1631
Record: 22-14
| Grand Prix Kobe 2014 (modern) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 926 | Shigeta, Hajime (1502) | Won 2-1 | +161611 |
| 2modern | 841 | Nozawa, Tomoki (1518) | Won 2-1 | +171628 |
| 3modern | 752 | Hamano, Kouhei (1504) | Lost 0-2 | -201608 |
| 4modern | 912 | Katou, Takayoshi (1504) | Won 2-0 | +161624 |
| 5modern | 797 | Sorida, Kazuki (1539) | Won 2-0 | +161640 |
| 6modern | 749 | Urasawa, Taiji (1658) | Lost 1-2 | -181622 |
| 7modern | 810 | Oda, Yuuki (1404) | Won 2-1 | +151637 |
| 8modern | 833 | Asaumi, Hiroki (1559) | Won 2-1 | +161653 |
| 9modern | 759 | Satou, Fumihiko (1449) | Lost 1-2 | -221631 |
| top | average opponent: 1515record: 6-3 | new rating: 1631 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 236 | Tanaka, Hayato (1550) | Lost 1-2 | -181536 |
| 2standard | 359 | Komikado, Hayato (1487) | Won 2-0 | +171553 |
| 3standard | 315 | Kodera, Yasunori (1487) | Lost 1-2 | -191534 |
| 4standard | 523 | Hashimoto, Akio (1549) | Won 2-1 | +181552 |
| 5standard | 303 | Ishigami, Nobuhide (1445) | Won 2-0 | +161568 |
| 6standard | 217 | Endo, Ryota (1836) | Won 2-0 | +231591 |
| 7standard | 135 | Omori, Wataru (1461) | Won 2-0 | +151606 |
| 8standard | 135 | Okada, Wataru (1707) | Won 2-0 | +201626 |
| 9standard | 101 | Nakamura, Atsushi (1764) | Won 2-0 | +211647 |
| 10standard | 75 | Murae, Ryuji (1730) | Lost 0-2 | -171630 |
| 11standard | 58 | Hung, Hsun Hao (1601) | Lost 1-2 | -181612 |
| 13standard | 57 | Tsuda, Mineyuki (1699) | Lost 1-2 | -171595 |
| top | average opponent: 1610record: 7-5 | new rating: 1595 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 90 | Endo, Jun'Ichi (1515) | Lost 1-2 | -181524 |
| 2standard | 252 | Takahashi, Ryo (1483) | Won 2-1 | +171541 |
| 3standard | 223 | Takahashi, Yuushi (1504) | Won 2-0 | +171558 |
| 4standard | 239 | Murata, Toshiaki (1479) | Lost 0-2 | -191539 |
| 5standard | 248 | Yokono, Yuusuke (1452) | Won 2-0 | +161555 |
| 6standard | 156 | Satou, Naoki (1612) | Won 2-1 | +191574 |
| 7standard | 141 | Tanaka, Kazuhiko (1418) | Lost 1-2 | -201554 |
| top | average opponent: 1495record: 4-3 | new rating: 1554 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 246 | Yamashita, Shuji (1500) | Won 2-1 | +181518 |
| 2extended | 141 | Yoshikai, Masaki (1518) | Won 2-0 | +181536 |
| 3extended | 26 | Takatsuki, Ryo (1476) | Lost 0-2 | -191517 |
| 4extended | 128 | Okano, Yoshiki (1518) | Lost 1-2 | -181499 |
| 5extended | 239 | Murase, Motonori (1527) | Won 2-0 | +181517 |
| 6extended | 117 | Suzuki, Keisuke (1619) | Won 2-1 | +201537 |
| 7extended | 123 | Tsuta, Naoto (1578) | Won 2-0 | +191556 |
| 8extended | 80 | Chiba, Akio (1801) | Lost 1-2 | -141542 |
| top | average opponent: 1567record: 5-3 | new rating: 1542 | ||