Matsushima, Naoto
Current rating: 1585
Record: 21-21
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 113 | Yada, Kazuki (1870) | Lost 0-2 | -131585 |
| 2pioneer | 110 | Kawata, Kazuki (1510) | Lost 0-2 | -191566 |
| 3pioneer | 103 | Fujimoto, Tomoya (1484) | Won 2-0 | +161582 |
| 4pioneer | 92 | Shinohara, Gen (1553) | Won 2-0 | +181600 |
| 5pioneer | 66 | Kato, Kensuke (1874) | Lost 0-2 | -141586 |
| 6pioneer | 66 | Tonouchi, Keita (1618) | Won 2-0 | +191605 |
| 7pioneer | 54 | Hishida, Akinori (1506) | Lost 0-2 | -201585 |
| top | average opponent: 1631record: 3-4 | new rating: 1585 | ||
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 68 | Izumi, Kento (1642) | Won 2-1 | +211489 |
| 2pioneer | 21 | Nishiura, Ryosuke (1683) | Lost 0-2 | -141475 |
| 3pioneer | 56 | Osamoto, Yuki (1504) | Won 2-1 | +181493 |
| 4pioneer | 53 | Kamo, Riki (1852) | Won 2-1 | +251518 |
| 5pioneer | 12 | Imazawa, Junpei (1553) | Won 2-0 | +181536 |
| 6pioneer | 12 | Tanahashi, Masayasu (1798) | Won 2-1 | +231559 |
| 7pioneer | 5 | Nakamura, Koki (1544) | Won 2-0 | +181577 |
| 8pioneer | 3 | Inoue, Toru (2041) | Lost 1-2 | -111566 |
| 9pioneer | 11 | Cho, Jeong Woo (1941) | Lost 1-2 | -111555 |
| 10pioneer | 21 | Sasao, Yusuke (1726) | Won 2-1 | +211576 |
| 11pioneer | 7 | Kondo, Shogo (1806) | Won 2-1 | +221598 |
| 12pioneer | 7 | Asaumi, Hiroki (1727) | ID | 01598 |
| top | average opponent: 1735record: 8-3-1 | new rating: 1598 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1412 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 196 | Kashiwagi, Yuki (1380) | Lost 1-2 | -181394 |
| 2pioneer | 428 | Kai, Masatoshi (1488) | Won 2-0 | +191413 |
| 3pioneer | 548 | Hatoyama, Shinya (1624) | Won 2-1 | +221435 |
| 4pioneer | 248 | Ichikawa, Takayoshi (1535) | Won 2-0 | +201455 |
| 5pioneer | 274 | Hasegawa, Keijiro (1626) | Lost 1-2 | -151440 |
| 6pioneer | 439 | Higashi, Kentarou (1560) | Won 2-1 | +201460 |
| 7pioneer | 333 | Adachi, Naohiko (1556) | Won 2-0 | +201480 |
| 8pioneer | 92 | Tsutsui, Yuki (1836) | Lost 1-2 | -121468 |
| top | average opponent: 1575record: 5-3 | new rating: 1468 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1387 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 429 | Katou, Takahisa (1500) | Won 2-0 | +201407 |
| 2sealed | 131 | Fujii, Kohei (1729) | Won 2-0 | +241431 |
| 3sealed | 109 | Kusakawa, Naoto (1420) | Lost 0-2 | -181413 |
| 4sealed | 507 | Kitahara, Hiroaki (1744) | Lost 1-2 | -131400 |
| 5sealed | 739 | Tomita, Ryutaro (1567) | Won 2-0 | +211421 |
| 6sealed | 599 | Tahara, Fumiya (1522) | Lost 0-2 | -161405 |
| 7sealed | 567 | Rodriguez, Luis (1483) | Won 2-1 | +201425 |
| 8sealed | 460 | Yamamoto, Takahiro (1736) | Lost 0-2 | -131412 |
| top | average opponent: 1588record: 4-4 | new rating: 1412 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 23 | Kasai, Takahide (1383) | Lost 0-2 | -201480 |
| 2modern | 718 | Shirakawa, Yuichiro (1395) | Lost 0-2 | -201460 |
| 3modern | 1093 | Iwaki, Yuta (1463) | Lost 1-2 | -181442 |
| 4modern | 1192 | Hanano, Tetsuaki (1404) | Won 2-1 | +181460 |
| 5modern | 1012 | Fukutani, Mitumasa (1442) | Lost 1-2 | -191441 |
| 6modern | 962 | Iwanaga, Kohei (1321) | Lost 0-2 | -201421 |
| 7modern | 833 | Iijima, Hiderou (1428) | Lost 0-2 | -181403 |
| 8modern | 712 | Konishi, So (1497) | Lost 1-2 | -161387 |
| top | average opponent: 1417record: 1-7 | new rating: 1387 | ||