Ogihara, Toshiki
Current rating: 1415
Record: 15-23-1
| Grand Prix Seattle 2018 (standard) (RIX standard) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 262 | Dealy, Christopher (1500) | Won 2-1 | +201425 |
| 2standard | 5 | Patrick, Stephen (1524) | Lost 0-2 | -161409 |
| 3standard | 359 | Minick, Reese (1443) | Won 1-0 | +181427 |
| 4standard | 364 | Pisarski, Matt (1593) | Won 2-0 | +211448 |
| 5standard | 137 | Pritt, Matthew (1511) | Lost 1-2 | -161432 |
| 6standard | 401 | James, Nate (1535) | Lost 1-2 | -171415 |
| top | average opponent: 1518record: 3-3 | new rating: 1415 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1364 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 148 | Kanazawa, Takashi (1477) | Won 2-0 | +201384 |
| 2sealed | 88 | Ootsuki, Naofumi (1518) | Lost 1-2 | -161368 |
| 3sealed | 111 | Ikeda, Naoto (1352) | Lost 1-2 | -181350 |
| 4sealed | 273 | Murata, Kouji (1510) | Won 2-0 | +211371 |
| 5sealed | 188 | Endou, Shun (1502) | Won 2-1 | +201391 |
| 6sealed | 135 | Sato, Rei (1622) | Lost 0-2 | -141377 |
| 7sealed | 157 | Honnami, Tomoyuki (1675) | Won 2-1 | +241401 |
| 8sealed | 122 | Washimi, Kazuo (1545) | Won 2-1 | +201421 |
| 9sealed | 83 | Shimizu, Ryo (1533) | Lost 1-2 | -161405 |
| top | average opponent: 1526record: 5-4 | new rating: 1405 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1396 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 89 | Hori, Nobuaki (1500) | Lost 1-2 | -161380 |
| 2standard | 265 | Takine, Kenji (1482) | Lost 1-2 | -161364 |
| top | average opponent: 1491record: 0-2 | new rating: 1364 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 108 | Niiyama, Masahiro (1370) | Lost 1-2 | -191390 |
| 2block | 144 | Tanabe, Kazuya (1334) | Won 2-0 | +171407 |
| 3block | 97 | Shirono, Mitsuhiro (1500) | Won 2-1 | +201427 |
| 4block | 132 | Mitamura, Kazuya (1615) | Lost 1-2 | -151412 |
| 5block | 140 | Ishii, Kazuyuki (1498) | Lost 0-2 | -161396 |
| top | average opponent: 1463record: 2-3 | new rating: 1396 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 122 | Ito, Yuuko (1500) | Draw 1-1 | +11443 |
| 2sealed | 191 | Murata, Hirokazu (1501) | Lost 0-2 | -171426 |
| 3sealed | 269 | Sekizawa, Takayuki (1480) | Lost 1-2 | -171409 |
| top | average opponent: 1494record: 0-2-1 | new rating: 1409 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 158 | Hirata, Minoru (1500) | Won 2-0 | +191450 |
| 2standard | 137 | Seki, Keita (1481) | Won 2-0 | +191469 |
| 3standard | 60 | Okugawa, Shoji (1685) | Lost 1-2 | -141455 |
| 4standard | 138 | Kikuchi, Yuuji (1592) | Won 2-1 | +201475 |
| 5standard | 96 | Kojima, Yoshimasa (1573) | Lost 1-2 | -161459 |
| 6standard | 198 | Umesawa, Takumi (1520) | Lost 0-2 | -171442 |
| top | average opponent: 1558record: 3-3 | new rating: 1442 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Nakazawa, Kazuhiro (1577) | Lost 0-2 | -151447 |
| 2sealed | 206 | Kanno, Tadashi (1487) | Won 2-0 | +181465 |
| 3sealed | 153 | Sato, Kimihiko (1520) | Lost 0-2 | -171448 |
| 4sealed | 178 | Nagata, Shigeki (1485) | Lost 1-2 | -171431 |
| top | average opponent: 1517record: 1-3 | new rating: 1431 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 88 | Tawa, Atsushi (1500) | Lost 1-2 | -181482 |
| 2extended | 142 | Chuujou, Yoshihiko (1480) | Won 2-0 | +181500 |
| 3extended | 130 | Hanae, Yutaka (1465) | Lost 1-2 | -191481 |
| 4extended | 179 | Konishi, Hideaki (1433) | Lost 0-2 | -191462 |
| top | average opponent: 1470record: 1-3 | new rating: 1462 | ||