Ishikawa, Kenya
Current rating: 1500
Record: 29-32-2
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 348 | Cho, Beommo (1516) | Won 2-1 | +181533 |
| 3pioneer | 258 | Yoshida, Yuuki (1537) | Lost 0-2 | -181515 |
| 4pioneer | 402 | Shirai, Kota (1521) | Won 2-0 | +181533 |
| 5pioneer | 250 | Matumoto, Yoshitaka (1687) | Lost 0-2 | -151518 |
| 6pioneer | 320 | Sugimoto, Takashi (1523) | Lost 0-2 | -181500 |
| top | average opponent: 1557record: 2-3 | new rating: 1500 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 509 | Ogawa, Daiki (1519) | Lost 0-2 | -191554 |
| 3sealed | 769 | Kamimura, Yohei (1467) | Lost 1-2 | -201534 |
| 4sealed | 899 | Terachi, Makoto (1481) | Lost 0-2 | -191515 |
| top | average opponent: 1489record: 0-3 | new rating: 1515 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 67 | Takahashi, Tsutomu (1454) | Won 2-0 | +171524 |
| 2modern | 513 | Kimura, Takuya (1431) | Lost 0-2 | -201504 |
| 3modern | 773 | Nakazawa, Koutarou (1298) | Draw 1-1 | -41500 |
| 4modern | 794 | Kuribayashi, Takamasa (1451) | Won 2-1 | +171517 |
| 5modern | 544 | Watanabe, Kyohei (1646) | Won 2-0 | +211538 |
| 6modern | 347 | Nakamura, Shohei (1538) | Draw 1-1 | 01538 |
| 7modern | 528 | Tanaka, Shinichi 5937 (1545) | Won 2-0 | +181556 |
| 8modern | 359 | Nakajima, Daisuke (1491) | Won 2-0 | +171573 |
| top | average opponent: 1482record: 5-1-2 | new rating: 1573 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 35 | Usui, Mitsuru (1726) | Won 2-0 | +231471 |
| 2standard | 238 | Hiroyama, Tomoki (1545) | Won 2-1 | +191490 |
| 3standard | 295 | Okamoto, Ryo (1707) | Lost 0-2 | -141476 |
| 4standard | 451 | Suzuki, Shoya (1591) | Won 2-0 | +201496 |
| 5standard | 149 | Honda, Rintaro (1876) | Lost 1-2 | -111485 |
| 6standard | 399 | Mori, Arashi (1449) | Lost 0-2 | -191466 |
| 7standard | 545 | Taki, Mayumi (1474) | Won 2-1 | +181484 |
| 8standard | 450 | Gotou, Hiroyuki (1725) | Won 2-1 | +231507 |
| top | average opponent: 1637record: 5-3 | new rating: 1507 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 194 | Nomura, Hiroshi (1557) | Lost 1-2 | -171486 |
| 2standard | 867 | Tazawa, Takatoshi (1427) | Lost 1-2 | -191467 |
| 3standard | 999 | Sano, Masayo (1400) | Lost 1-2 | -191448 |
| top | average opponent: 1461record: 0-3 | new rating: 1448 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 54 | Ida, Yuuji (1482) | Lost 0-2 | -191503 |
| top | record: 0-1 | new rating: 1503 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 114 | Mikami, Akihiro (1539) | Won 2-0 | +181577 |
| 2sealed | 112 | Chiba, Takato (1684) | Lost 1-2 | -171560 |
| 3sealed | 868 | Ishii, Asuha (1498) | Lost 1-2 | -191541 |
| 4sealed | 1015 | Murata, Shunya (1468) | Lost 0-2 | -191522 |
| top | average opponent: 1547record: 1-3 | new rating: 1522 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 278 | Sakaue, Shota (1500) | Lost 0-2 | -191515 |
| 2modern | 744 | Oonishi, Tomokazu (1459) | Won 2-1 | +171532 |
| 3modern | 944 | Yoshimura, Syouichi (1478) | Won 2-0 | +171549 |
| 4modern | 438 | Endo, Yasuhiko (1461) | Won 2-0 | +171566 |
| 5modern | 499 | Hattori, Taiki (1664) | Lost 1-2 | -161550 |
| 6modern | 818 | Sakai, Toshinori (1737) | Lost 1-2 | -151535 |
| 7modern | 713 | Goto, Satoshi (1472) | Won 2-1 | +171552 |
| 8modern | 558 | Ikeda, Takahiro (1725) | Won 2-1 | +211573 |
| 9modern | 491 | Watanabe, Takanori (1843) | Won 2-1 | +231596 |
| 10modern | 407 | Kawase, Yoshihiko (1549) | Lost 0-2 | -191577 |
| 11modern | 337 | Yajima, Tatsuaki (1709) | Won 2-0 | +201597 |
| 12modern | 306 | Yoshida, Yutarou (1543) | Lost 1-2 | -191578 |
| 13modern | 291 | Okudaira, Takenatsu (1502) | Lost 0-2 | -191559 |
| top | average opponent: 1588record: 7-6 | new rating: 1559 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 660 | Uchiyama, Tomohiro (1555) | Won 2-1 | +201466 |
| 4standard | 57 | Okada, Hajime (1409) | Won 2-1 | +171483 |
| 5standard | 50 | Hasegawa, Tatuya (1561) | Lost 1-2 | -161467 |
| 6standard | 205 | Wong, Nicholas Jonathan (1804) | Won 2-1 | +231490 |
| 7standard | 207 | Kobayashi, Tetsuro (1696) | Won 2-1 | +221512 |
| 8standard | 110 | Usui, Syou (1791) | Lost 1-2 | -131499 |
| 9standard | 198 | Michibata, Tatsuya (1563) | Won 2-0 | +191518 |
| 10standard | 81 | Murata, Toshiaki (1899) | Lost 0-2 | -111507 |
| 11standard | 190 | Oh, Joo Hyun (1780) | Won 2-0 | +231530 |
| 12standard | 182 | Gondo, Rin (1588) | Won 2-1 | +191549 |
| 13standard | 132 | Shin, Masayuki (1595) | Won 2-0 | +191568 |
| 14standard | 71 | Suzuki, Thierry (1645) | Lost 1-2 | -171551 |
| 15standard | 93 | Okuhara, Yuuki (1606) | Lost 1-2 | -171534 |
| top | average opponent: 1653record: 8-5 | new rating: 1534 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 149 | Ueda, Kazuyoshi (1500) | Lost 0-2 | -181482 |
| 2legacy | 602 | Kawashima, Takeru (1482) | Lost 0-2 | -181464 |
| 3legacy | 1174 | Cheng, Victor (1465) | Lost 0-2 | -181446 |
| 4legacy | 1146 | Hashimoto, Satoru (1447) | Won 2-1 | +181464 |
| 5legacy | 988 | Kasuya, Daisuke (1470) | Lost 0-2 | -181446 |
| top | average opponent: 1473record: 1-4 | new rating: 1446 | ||