Isono, Toru
Current rating: 1404
Record: 14-22-3
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1339 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 356 | Ichikawa, Tomokazu (1547) | Won 2-0 | +211360 |
| 2sealed | 494 | Sasaki, Shun (1348) | Won 2-0 | +181378 |
| 3sealed | 130 | Shima, Junichirou (1539) | Won 2-0 | +211399 |
| 4sealed | 216 | Lu, Pengjie (1706) | Lost 0-2 | -121387 |
| 5sealed | 178 | Kihara, Syouta (1635) | Won 2-1 | +221409 |
| 6sealed | 245 | Bergelin, Erik (1538) | Won 2-0 | +201429 |
| 7sealed | 164 | Ninomiya, Souta (1742) | Lost 0-2 | -121417 |
| 8sealed | 159 | Hoshino, Yuuki (1738) | Lost 1-2 | -131404 |
| top | average opponent: 1599record: 5-3 | new rating: 1404 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1422 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 289 | Nakahara, Daichi (1500) | Draw 1-1 | +21424 |
| 2modern | 607 | Nakamura, Hayato (1472) | Won 2-1 | +191443 |
| 3modern | 554 | Shimada, Masahiko (1839) | Lost 1-2 | -111432 |
| 4modern | 801 | Sonoda, Kenichi (1318) | Lost 1-2 | -211411 |
| 5modern | 947 | Nakata, Kohki (1485) | Lost 1-2 | -161395 |
| 6modern | 916 | Nonaka, Takayuki (1465) | Lost 1-2 | -171378 |
| 7modern | 820 | Kanno, Yuuya (1446) | Lost 0-2 | -171361 |
| 8modern | 710 | Miyazaki, Kazuyuki (1100) | Lost 1-2 | -221339 |
| top | average opponent: 1453record: 1-6-1 | new rating: 1339 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 385 | Yarita, Yoshiaki (1461) | Lost 1-2 | -191478 |
| 2legacy | 830 | Ookubo, Jyunpei (1514) | Won 2-0 | +191497 |
| 3legacy | 1004 | Murata, Youta (1500) | Lost 1-2 | -181479 |
| 4legacy | 1047 | Kurosawa, Yuki0200 (1480) | Lost 1-2 | -181461 |
| 5legacy | 1043 | Nakamura, Takuya (1319) | Lost 1-2 | -211440 |
| 6legacy | 1044 | Kinoshita, Yuhei (1442) | Lost 0-2 | -181422 |
| top | average opponent: 1453record: 1-5 | new rating: 1422 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 644 | Amano, Takatoshi (1408) | Won 2-1 | +171487 |
| 2standard | 392 | Iwase, Hirokazu (1456) | Won 2-1 | +181505 |
| 3standard | 664 | Nagai, Kousuke (1642) | Won 2-1 | +201525 |
| 4standard | 281 | Ono, Makoto (1613) | Lost 0-2 | -161509 |
| 5standard | 619 | Oota, Nobuyuki (1502) | Lost 0-2 | -181491 |
| 6standard | 823 | Yasuda, Yoshifumi (1514) | Won 2-1 | +181509 |
| 7standard | 606 | Wataya, Yosuke (1512) | Lost 0-2 | -181491 |
| 8standard | 717 | Mochizuki, Yuusuke (1817) | Draw 1-1 | +61497 |
| top | average opponent: 1558record: 4-3-1 | new rating: 1497 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2382 | Shiota, Fumihiko (1777) | Lost 1-2 | -131508 |
| 2sealed | 2276 | Inage, Naoto (1483) | Lost 1-2 | -191489 |
| 3sealed | 2431 | Tamura, Kenji (1443) | Lost 1-2 | -191470 |
| top | average opponent: 1568record: 0-3 | new rating: 1470 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 334 | Ushikubo, Kenichi (1434) | Won 2-1 | +171517 |
| 2extended | 111 | Matsuura, Hiroyuki (1518) | Lost 1-2 | -181499 |
| 3extended | 161 | Inagaki, Masaya (1499) | Won 2-0 | +181517 |
| 4extended | 157 | Kato, Shinya (Saitama (1570) | Lost 0-2 | -171500 |
| 5extended | 323 | Sugiki, Takafumi (1751) | Won 2-0 | +221522 |
| 6extended | 282 | Sasaoka, Hirohito (1456) | Draw 1-1 | -11521 |
| top | average opponent: 1538record: 3-2-1 | new rating: 1521 | ||