Wakamatsu, Akimasa
Current rating: 1495
| Grand Prix Chiba 2016 (legacy) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 596 | Koseki, Kouta5538 (1500) | Won 2-0 | +181507 |
| 2legacy | 116 | Fujita, Osamu (1796) | Lost 0-2 | -131494 |
| 3legacy | 824 | Uehara, Jin (1471) | Won 2-0 | +181512 |
| 4legacy | 586 | Ishikawa, Shou (1637) | Won 2-0 | +201532 |
| 5legacy | 300 | Mune, Kento (1487) | Lost 1-2 | -191513 |
| 6legacy | 442 | Peil, Shannon (1516) | Lost 0-1 | -181495 |
| top | average opponent: 1568record: 3-3 | new rating: 1495 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 89 | Yamamoto, Kenta (1518) | Lost 0-2 | -171468 |
| 2legacy | 365 | Yamaguchi, Katsuhiro (1417) | Won 2-1 | +171485 |
| 3legacy | 401 | Kawaguchi, Shuichi (1498) | Lost 1-2 | -181467 |
| 4legacy | 330 | Iwatsu, Hirotaka (1555) | Won 2-1 | +201487 |
| 5legacy | 355 | Yamada, Takatoshi (1501) | Won 2-0 | +181505 |
| 6legacy | 178 | Katagiri, Shinichi (1610) | Lost 1-2 | -161489 |
| top | average opponent: 1516record: 3-3 | new rating: 1489 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 16 | Hirabayashi, Yuuki (1560) | Lost 0-2 | -171483 |
| 4modern | 180 | Low, Pak Tsung (1508) | Won 2-1 | +191502 |
| 5modern | 236 | Sakamoto, Masaaki (1466) | Won 2-1 | +171519 |
| 6modern | 85 | Inoue, Toru (1707) | Lost 0-2 | -151504 |
| 7modern | 195 | Fukumoto, Nobuhiro (1446) | Lost 0-2 | -191485 |
| top | average opponent: 1537record: 2-3 | new rating: 1485 | ||