Oikawa, Mutsuki
Current rating: 1541
Record: 21-19-4
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 316 | Nakamura, Hisashi (1559) | Lost 0-2 | -171527 |
| 2sealed | 329 | Kumagai, Haruka (1516) | Won 2-0 | +171544 |
| 3sealed | 373 | Shinoda, Akito (1531) | Won 2-0 | +181562 |
| 4sealed | 141 | Ogasawara, Nobuyuki (1517) | Lost 0-2 | -191543 |
| 5sealed | 320 | Watanabe, Masaki (1451) | Won 2-0 | +171560 |
| 6sealed | 286 | Kobayashi, Atsushi (1516) | Lost 1-2 | -191541 |
| top | average opponent: 1515record: 3-3 | new rating: 1541 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 27 | fukuda, bunpei (1500) | Won 2-0 | +181549 |
| 2standard | 214 | Kabeshita, Yoshito (1556) | Lost 1-2 | -181531 |
| 3standard | 209 | Tezuka, Yuuki (1423) | Lost 0-2 | -201511 |
| 4standard | 278 | Matushita, Masakazu (1533) | Won 2-0 | +181529 |
| 5standard | 259 | Kikkawa, Takayuki (1468) | Draw 1-1 | -11528 |
| 6standard | 241 | Tawaraya, Takehito (1507) | Draw 1-1 | 01528 |
| 7standard | 210 | Yachi, Hajime (1442) | Won 2-0 | +161544 |
| top | average opponent: 1490record: 3-2-2 | new rating: 1544 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 41 | Deuitch, Lorne (1483) | Won 2-0 | +181497 |
| 2sealed | 17 | Tsuchiya, Heinrich (1630) | Won 2-0 | +211518 |
| 3sealed | 62 | Yamashita, Hiroki (1545) | Won 2-1 | +181536 |
| 4sealed | 37 | Hirabayashi, Kazuya (1977) | Lost 1-2 | -101526 |
| 5sealed | 67 | Osumi, Keigo (1527) | Won 2-1 | +181544 |
| 6sealed | 85 | Nikkuni, Fumihito (1607) | Lost 1-2 | -171527 |
| 7sealed | 81 | Fujita, Osamu (1776) | Lost 0-2 | -141513 |
| 8sealed | 93 | Ishiduka, Hazime (1516) | Won 2-1 | +181531 |
| top | average opponent: 1633record: 5-3 | new rating: 1531 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 7 | Kou, Nobuaki (1496) | Lost 1-2 | -191502 |
| 2standard | 340 | Kawabata, Tomoyuki (1468) | Won 2-1 | +181520 |
| 3standard | 287 | Hitomi, Masaaki (1464) | Lost 1-2 | -191501 |
| 4standard | 390 | Kawabata, Nobuto (1482) | Won 2-1 | +171518 |
| 5standard | 225 | Tanaka, Ryota (1422) | Lost 1-2 | -191499 |
| 6standard | 322 | Hayakawa, Toshiaki (1483) | Lost 1-2 | -191480 |
| 7standard | 285 | Kawakami, Hiroshi (1435) | Won 2-0 | +181498 |
| 8standard | 230 | Yoshikuni, Mitsuyuki (1521) | Draw 1-1 | 01498 |
| 9standard | 189 | Nishihara, Hiroki (1455) | Lost 0-2 | -191479 |
| top | average opponent: 1470record: 3-5-1 | new rating: 1479 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 11 | Sugiura, Hiroki (1502) | Lost 0-2 | -181487 |
| 2sealed | 282 | Tanaka, Yosuke (1484) | Draw 1-1 | 01487 |
| 3sealed | 249 | Kimoto, Seiichi (1478) | Won 2-0 | +181505 |
| 4sealed | 188 | Watanabe, Hiroyuki (1548) | Won 2-0 | +181523 |
| 5sealed | 124 | Teramoto, Shoji (1491) | Lost 0-2 | -181505 |
| 6sealed | 157 | Tsunokawa, Yoshikazu (1402) | Won 2-1 | +161521 |
| top | average opponent: 1484record: 3-2-1 | new rating: 1521 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 21 | Kitano, Tetsuya (1496) | Lost 1-2 | -181482 |
| 2sealed | 233 | Saito, Kanao (1481) | Lost 1-2 | -181464 |
| 3sealed | 269 | Iwashita, Satoshi (1482) | Won 2-1 | +181482 |
| 4sealed | 208 | Takei, Tomoyuki (1482) | Won 2-0 | +181500 |
| 5sealed | 162 | Eura, Hiroki (1487) | Won 2-0 | +181518 |
| 6sealed | 140 | Morimoto, Manabu (1527) | Lost 1-2 | -181500 |
| 7sealed | 141 | Nakamura, Satoshi (1716) | Won 2-1 | +221522 |
| 8sealed | 102 | Matsuoka, Tomohide (1565) | Lost 0-2 | -171505 |
| top | average opponent: 1529record: 4-4 | new rating: 1505 | ||