Koide, Masaru
Current rating: 1472
Record: 7-9
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 214 | Tamura, Tomoaki (1500) | Lost 0-0 | -191491 |
| 2sealed | 245 | Yasuda, Masayuki (1530) | Won 2-1 | +191510 |
| 3sealed | 174 | Abe, Ken'Ichi (1470) | Lost 1-2 | -191491 |
| 4sealed | 242 | Nagata, Satoshi (1435) | Lost 1-2 | -191472 |
| top | average opponent: 1484record: 1-3 | new rating: 1472 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 29 | Wakisaka, Yuusuke (1525) | Lost 0-2 | -181510 |
| top | record: 0-1 | new rating: 1510 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 220 | Nakatani, Haruki (1607) | Lost 1-2 | -161491 |
| 2sealed | 249 | Shinoda, Ryo (1479) | Won 2-1 | +181509 |
| 3sealed | 181 | Ishida, Syota (1462) | Lost 0-2 | -191490 |
| 4sealed | 270 | Yamada, Hiroki (1497) | Won 2-1 | +181508 |
| 5sealed | 211 | Sato, Shinichi (1601) | Won 2-1 | +201528 |
| top | average opponent: 1529record: 3-2 | new rating: 1528 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 93 | Kawabata, Kiyoto (1535) | Won 2-1 | +191519 |
| 2standard | 38 | Mino, Tetsuya (1467) | Won 2-0 | +171536 |
| 3standard | 127 | Toda, Hirotsugu (1554) | Won 2-0 | +181554 |
| 4standard | 6 | Mori, Katsuhiro (1996) | Lost 0-2 | -101544 |
| 5standard | 179 | Haga, Yuuichi (1520) | Lost 1-2 | -191525 |
| 6standard | 219 | Hattyou, Yuuki (1518) | Lost 1-2 | -181507 |
| top | average opponent: 1598record: 3-3 | new rating: 1507 | ||