Akaiwa, Taku
Current rating: 1537
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1581 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 366 | Yo, Seop Lee (1500) | Won 2-0 | +161597 |
| 2legacy | 258 | Satou, Shouichi (1533) | Lost 1-2 | -191578 |
| 3legacy | 423 | Kanbara, Hokuto (1481) | Won 2-0 | +161594 |
| 4legacy | 318 | Ohkouchi, Atsushi (1501) | Lost 0-2 | -191575 |
| 5legacy | 417 | Aihara, Shogaku (1547) | Lost 0-2 | -191556 |
| 6legacy | 453 | Shiomi, Hirohisa (1498) | Lost 1-2 | -191537 |
| top | average opponent: 1510record: 2-4 | new rating: 1537 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 82 | Mori, Yumeto (1539) | Won 2-0 | +181582 |
| 4legacy | 241 | Arai, Yusuke (1632) | Lost 1-2 | -181564 |
| 5legacy | 169 | Yamamoto, Kouhei (1568) | Won 2-0 | +191583 |
| 6legacy | 334 | Yamauchi, Takashi (1443) | Won 2-1 | +151598 |
| 7legacy | 101 | Fukuji, Yuta (1608) | Won 2-1 | +181616 |
| 8legacy | 46 | Yokota, Takuma (1561) | Lost 1-2 | -191597 |
| 9legacy | 220 | Kudo, Koichi (1747) | Won 2-0 | +211618 |
| 10legacy | 94 | Kawasaki, Masatsugu (1550) | Won 2-1 | +171635 |
| 11legacy | 67 | Fujimoto, Takehiro (1786) | Lost 1-2 | -161619 |
| 12legacy | 156 | Kanasawa, Satohito (1591) | Lost 0-2 | -181601 |
| 13legacy | 185 | Okada, Naoya (1671) | Lost 0-2 | -171584 |
| 14legacy | 213 | Hirosawa, Yuuichirou (1561) | Lost 0-2 | -181566 |
| 15legacy | 217 | Takenaka, Susumu (1410) | Won 2-1 | +151581 |
| top | average opponent: 1590record: 7-6 | new rating: 1581 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 305 | Yamaoka, Keita (1500) | Lost 1-2 | -181482 |
| 2legacy | 232 | Kishimoto, Takafumi (1482) | Won 2-0 | +181500 |
| 3legacy | 336 | Hirotaka, Hirotaka (1501) | Won 2-1 | +181518 |
| 4legacy | 159 | Hirayama, Shigetaka (1584) | Won 2-0 | +191537 |
| 5legacy | 143 | Murai, Tatsuya (1533) | Won 2-0 | +181555 |
| 6legacy | 88 | Yokoya, Hajime (1618) | Lost 1-2 | -171538 |
| 7legacy | 173 | Fujita, Osamu (1810) | Won 2-0 | +231561 |
| 8legacy | 95 | Hoshino, Yohei (1740) | Lost 0-2 | -151546 |
| 9legacy | 122 | Takimura, Yuya (1526) | Won 2-1 | +181564 |
| top | average opponent: 1588record: 6-3 | new rating: 1564 | ||