Isobe, Jyunichi
Current rating: 1540
Record: 17-16
| Grand Prix Yokohama 2019 (modern) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 213 | Nitta, Ryou (1655) | Won 2-1 | +211478 |
| 2modern | 270 | Sheng, Guangying (1519) | Won 2-0 | +191497 |
| 3modern | 485 | Takeda, Hiroshi (1528) | Lost 0-2 | -171480 |
| 4modern | 364 | Iijima, Shin (1451) | Won 2-0 | +171497 |
| 5modern | 402 | Jo, Bunkun (1631) | Won 2-0 | +211518 |
| 6modern | 269 | Moriyama, Masahide (1753) | Won 2-0 | +221540 |
| 7modern | 85 | Sugiyama, Nobukatsu (1570) | Won 2-0 | +181558 |
| 8modern | 76 | Honda, Rintaro (1947) | Lost 1-2 | -111547 |
| 9modern | 123 | Nagae, Kazuya (1537) | Won 2-1 | +181565 |
| 10modern | 47 | Mizutani, Yosuke (1840) | Lost 1-2 | -131552 |
| 11modern | 169 | Kobayashi, Kazutaka (1742) | Lost 0-2 | -151537 |
| 12modern | 188 | Hirosawa, Yuki (1506) | Won 2-1 | +181555 |
| 13modern | 107 | Popitukgul, Sutipong (1752) | Lost 0-2 | -151540 |
| top | average opponent: 1648record: 8-5 | new rating: 1540 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 342 | Hirayama, Rei (1467) | Lost 0-2 | -181457 |
| top | record: 0-1 | new rating: 1457 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 35 | Higashimori, Kazunori (1478) | Lost 1-2 | -181500 |
| 2sealed | 343 | Tsuji, Toshiya (1499) | Won 2-0 | +181518 |
| 3sealed | 487 | Matsumura, Kentarou (1478) | Lost 1-2 | -191499 |
| 4sealed | 505 | Tsugawa, Tatsuya (1489) | Won 2-1 | +181517 |
| 5sealed | 277 | Otuka, Ryutaro (1409) | Lost 0-2 | -201497 |
| 6sealed | 350 | Sasaki, Daisuke (1278) | Lost 0-2 | -221475 |
| top | average opponent: 1439record: 2-4 | new rating: 1475 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 755 | Matsuo, Masaki (1500) | Won 2-0 | +171537 |
| 2sealed | 668 | Esashika, Akio (1519) | Lost 0-2 | -181519 |
| 3sealed | 1018 | Sung, Jee-sun (1499) | Won 2-0 | +181537 |
| 4sealed | 933 | Igarashi, Jun (1617) | Lost 0-2 | -171520 |
| 5sealed | 955 | Suzuki, Marin (1481) | Won 2-0 | +171537 |
| 6sealed | 862 | Suzuki, Masahiro 7609 (1489) | Lost 0-2 | -191518 |
| top | average opponent: 1518record: 3-3 | new rating: 1518 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 298 | Ebitani, Keisuke (1515) | Lost 0-2 | -181482 |
| 2modern | 484 | Izu, Yuuya (1482) | Won 2-0 | +181500 |
| 3modern | 560 | Kurata, Shintaro (1501) | Won 2-1 | +181518 |
| 4modern | 241 | Tanimoto, Yusaku (1550) | Won 2-0 | +191537 |
| 5modern | 294 | Fujimoto, Yosuke (1616) | Won 2-0 | +191556 |
| 6modern | 93 | Hasegawa, Baku (1524) | Lost 0-2 | -181538 |
| 7modern | 200 | Tomizawa, Shoudai (1534) | Lost 1-2 | -181520 |
| top | average opponent: 1532record: 4-3 | new rating: 1520 | ||