Ogawa, Masahiro
Current rating: 1451
Record: 9-13-2
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1465 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Hamanaka, Keita (1445) | Lost 1-2 | -181447 |
| 2standard | 305 | Tsunoda, Shingo (1482) | Won 2-0 | +191466 |
| 3standard | 135 | Yabuta, Junichi (1531) | Lost 1-2 | -171449 |
| 4standard | 324 | Kubota, Junji (1420) | Won 2-1 | +171466 |
| 5standard | 299 | Saito, Tomoya (1635) | Lost 0-2 | -151451 |
| top | average opponent: 1503record: 2-3 | new rating: 1451 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 115 | Sawade, Makoto (1466) | Won 2-1 | +191431 |
| 2sealed | 104 | Kudo, Tomoaki (1500) | Won 2-1 | +191450 |
| 3sealed | 94 | Murakami, Norichika (1615) | Lost 0-2 | -151435 |
| 4sealed | 130 | Takeshita, Toru (1623) | Won 2-0 | +211456 |
| 5sealed | 49 | Kim, Min-Soo (1482) | Lost 0-2 | -171439 |
| 6sealed | 114 | Yasuda, Masahiro (1470) | Won 2-1 | +181457 |
| 7sealed | 92 | Ishida, Itaru (1767) | Won 2-1 | +241481 |
| 8sealed | 14 | Yanagisawa, Tadahiro (1625) | Lost 0-2 | -161465 |
| top | average opponent: 1568record: 5-3 | new rating: 1465 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 160 | Takei, Tomoyuki (1465) | Lost 0-2 | -171427 |
| 2block | 291 | Maeda, Tuyosi (1482) | Lost 0-2 | -171410 |
| 3block | 350 | Kizaki, Satoshi (1464) | Won 2-0 | +191429 |
| 4block | 299 | Iwamoto, Gohki (1482) | Lost 1-2 | -171412 |
| top | average opponent: 1473record: 1-3 | new rating: 1412 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 174 | Okada, Takashi (1463) | Draw 1-1 | -11499 |
| 2sealed | 194 | Tanaka, Nobuhiko (1465) | Lost 0-2 | -181481 |
| 3sealed | 271 | Komatsu, Takashi (1483) | Won 2-0 | +181499 |
| 4sealed | 201 | Hirai, Takayuki (1482) | Lost 0-2 | -191480 |
| 5sealed | 241 | Iwahori, Takashi (1482) | Draw 1-1 | 01480 |
| 6sealed | 215 | Deyama, Hirofumi (1471) | Lost 1-2 | -181462 |
| 7sealed | 180 | Yamano, Tatsuto (1463) | Lost 1-2 | -181444 |
| top | average opponent: 1473record: 1-4-2 | new rating: 1444 | ||