Matsunaga, Koutarou
Current rating: 1610
| Grand Prix Chiba 2016 (legacy) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 494 | Aoyagi, Shinnosuke (1498) | Lost 0-2 | -191522 |
| 4legacy | 467 | Oshima, Shimpei (1489) | Won 2-0 | +181540 |
| 5legacy | 182 | Kawaharada, Kosaku (1487) | Won 2-1 | +171557 |
| 6legacy | 238 | Juumonji, Ryou (1872) | Lost 1-2 | -131544 |
| 7legacy | 395 | Nonaka, Harufumi (1571) | Won 2-1 | +191563 |
| 8legacy | 287 | Yokumichi, Jun (1521) | Won 2-0 | +171580 |
| 9legacy | 217 | Kishi, Daiko (1454) | Lost 0-2 | -201560 |
| 10legacy | 176 | Hirosawa, Yuki (1462) | Won 2-1 | +161576 |
| 11legacy | 182 | Kamimura, Fumihiro (1658) | Won 2-1 | +191595 |
| 12legacy | 150 | Uchida, Wataru (1540) | Won 2-0 | +171612 |
| 13legacy | 73 | Fujimoto, Takehiro (1780) | Won 2-1 | +221634 |
| 14legacy | 39 | Yasooka, Shota (2191) | Lost 1-2 | -91625 |
| 15legacy | 94 | Goshima, Akito (1810) | Lost 1-2 | -151610 |
| top | average opponent: 1641record: 8-5 | new rating: 1610 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 670 | Katou, Tomiji (1500) | Won 2-1 | +171545 |
| 2legacy | 600 | Koga, Takashi (1518) | Won 2-0 | +181563 |
| 3legacy | 507 | Shin, Masayuki (1536) | Won 2-0 | +171580 |
| 4legacy | 537 | Ou, Kaitou (1584) | Won 2-1 | +181598 |
| 5legacy | 535 | Murakami, Souta (1556) | Lost 0-2 | -181580 |
| 6legacy | 625 | Ogawa, Ryota (1562) | Lost 0-2 | -191561 |
| 7legacy | 652 | Akase, Daisuke (1441) | Lost 0-2 | -201541 |
| top | average opponent: 1528record: 4-3 | new rating: 1541 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 340 | Kaido, Yoshiaki (1483) | Won 2-0 | +181518 |
| 2modern | 210 | Endo, Jun'Ichi (1645) | Won 2-1 | +201538 |
| 3modern | 252 | Shiroza, Shinichiro (1670) | Lost 0-2 | -161522 |
| 4modern | 193 | Ishiguro, Satoshi (Chiba) (1516) | Won 2-1 | +181540 |
| 5modern | 224 | Kawahara, Yuki (1533) | Won 2-0 | +181558 |
| 6modern | 122 | Takebayashi, Tomo (1755) | Lost 1-2 | -141544 |
| 7modern | 250 | Taru, Genki (1665) | Lost 0-2 | -161528 |
| top | average opponent: 1609record: 4-3 | new rating: 1528 | ||