Miyakawa, Ayumu
Current rating: 1511
Record: 9-9
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 218 | Takahashi, Toshiaki (1500) | Won 2-1 | +181487 |
| 2sealed | 94 | Chijimi, Keiichi (1595) | Lost 1-2 | -161471 |
| 3sealed | 329 | Takamichi, Hiroyuki (1500) | Won 2-1 | +191490 |
| 4sealed | 130 | Furusato, Hiroshi (1626) | Lost 0-2 | -161474 |
| 5sealed | 311 | Akase, Daisuke (1451) | Won 2-0 | +181492 |
| 6sealed | 159 | Iwahashi, Hiroki (1514) | Won 2-1 | +181510 |
| 7sealed | 201 | Ishikawa, Tomoyasu (1508) | Won 2-1 | +181528 |
| 8sealed | 60 | Endo, Yusuke (1549) | Lost 1-2 | -171511 |
| top | average opponent: 1530record: 5-3 | new rating: 1511 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 512 | Kamizono, Naoki (1632) | Lost 0-2 | -151469 |
| top | record: 0-1 | new rating: 1469 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1063 | Esashika, Akio (1502) | Lost 1-2 | -181468 |
| 2sealed | 997 | Karasawa, Satoshi (1482) | Won 2-0 | +181486 |
| 3sealed | 994 | Itou, Ryouta (1400) | Won 2-1 | +171503 |
| 4sealed | 845 | Maigne, Alan (1498) | Lost 1-2 | -181485 |
| 5sealed | 941 | Morikawa, Tomoya (1500) | Won 2-1 | +181503 |
| 6sealed | 878 | Imai, Masakatsu (1468) | Lost 1-2 | -191484 |
| top | average opponent: 1475record: 3-3 | new rating: 1484 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 270 | Taniguchi, Hironobu (1464) | Won 2-1 | +171517 |
| 2standard | 381 | Kitayama, Masaya (1775) | Lost 0-2 | -131504 |
| 3standard | 474 | Aoki, Shougo (1491) | Lost 0-2 | -181486 |
| top | average opponent: 1577record: 1-2 | new rating: 1486 | ||