Soma, Kosuke
Current rating: 1519
Record: 14-15-1
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1493 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 776 | Kawaguchi, Hitoshi (1500) | Draw 1-1 | 01493 |
| 2sealed | 597 | Shimizu, Hiroaki 7321 (1516) | Lost 0-2 | -171476 |
| 3sealed | 1008 | Fang, Jiahao (1568) | Won 2-1 | +191495 |
| 4sealed | 775 | Fujii, Kohei (1561) | Won 2-1 | +191514 |
| 5sealed | 523 | Izushi, Kazuya (1591) | Won 2-1 | +201534 |
| 6sealed | 329 | Gotou, Hiroaki (1692) | Lost 0-2 | -151519 |
| top | average opponent: 1571record: 3-2-1 | new rating: 1519 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 215 | Isurugi, Hideyuki (1654) | Lost 1-2 | -161495 |
| 3sealed | 834 | Uchiyama, Kouichi (1286) | Lost 0-2 | -211474 |
| 4sealed | 987 | Toyoda, Ryosuke (1369) | Won 2-0 | +161490 |
| 5sealed | 908 | Komada, Shun (1603) | Won 2-0 | +201510 |
| 6sealed | 379 | Anan, Kazuyoshi (1573) | Won 2-1 | +191529 |
| 7sealed | 285 | Inada, Scott (1609) | Lost 0-2 | -171512 |
| 8sealed | 566 | Saito, Keisuke (1437) | Lost 1-2 | -191493 |
| top | average opponent: 1504record: 3-4 | new rating: 1493 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 194 | Nakagawa, Shinichi (1464) | Won 2-1 | +181508 |
| 4legacy | 242 | Kajitani, Akinobu (1637) | Won 2-0 | +201528 |
| 5legacy | 109 | Oosaka, Yuusuke (1865) | Lost 0-2 | -121516 |
| 6legacy | 115 | Brown, Eric (1701) | Lost 1-2 | -151501 |
| 7legacy | 314 | Shiraishi, Ginga (1450) | Won 2-0 | +171518 |
| 8legacy | 158 | Tsukahara, Kazuto (1620) | Won 2-0 | +201538 |
| 9legacy | 182 | Yamanaka, Shouki (1601) | Won 2-1 | +191557 |
| 10legacy | 78 | Yoshimori, Sho (1805) | Lost 0-2 | -131544 |
| 11legacy | 240 | Yoshida, Yuuji (1673) | Lost 1-2 | -161528 |
| 12legacy | 282 | Saito, Fumiya (1572) | Lost 1-2 | -171511 |
| top | average opponent: 1639record: 5-5 | new rating: 1511 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 318 | Kageyama, Hiroki (1605) | Lost 0-2 | -161484 |
| 4standard | 483 | Watanabe, Takumi (1509) | Lost 0-2 | -181466 |
| 5standard | 990 | Uchida, Yuki (1485) | Lost 1-2 | -171449 |
| 6standard | 1123 | Higashi, Kentarou (1581) | Won 2-1 | +201469 |
| 7standard | 796 | Makino, Yuuhei (1486) | Won 2-0 | +181487 |
| 8standard | 663 | Yamaji, Shunichi (1603) | Won 2-0 | +211508 |
| 9standard | 473 | Isogami, Kazuma (1535) | Lost 1-2 | -181490 |
| top | average opponent: 1543record: 3-4 | new rating: 1490 | ||