Ishikawa, Kenji
Current rating: 1543
Record: 36-43-1
| Regional Championships Aichi 2022 (pioneer) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 77 | Sugimoto, Takashi (1500) | Won 2-1 | +171565 |
| 2pioneer | 38 | Hashizume, Hayato (1518) | Lost 1-2 | -181547 |
| 3pioneer | 27 | Hamaguchi, Masakuni (1856) | Lost 0-2 | -131534 |
| 4pioneer | 79 | Jung, Ga Ram (1555) | Won 2-1 | +181552 |
| 5pioneer | 55 | Ushio, Atsushi (1698) | Lost 0-2 | -151537 |
| 6pioneer | 53 | Horiuchi, Makoto (1824) | Lost 1-2 | -131524 |
| 7pioneer | 59 | Kondo, Go (1584) | Won 2-0 | +191543 |
| top | average opponent: 1648record: 3-4 | new rating: 1543 | ||
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1583 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 240 | Mizuno, Ginjiro (1536) | Won 2-0 | +171600 |
| 4pioneer | 189 | Kurata, Shintaro (1712) | Lost 0-2 | -161584 |
| 5pioneer | 151 | Ichikawa, Norikazu (1636) | Lost 0-2 | -171567 |
| 6pioneer | 503 | Suganuma, Asaki (1515) | Lost 1-2 | -191548 |
| top | average opponent: 1600record: 1-3 | new rating: 1548 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 287 | Yoshida, Kenji (1598) | Won 2-0 | +201502 |
| 4standard | 201 | Ooyama, Shinnosuke (1521) | Won 2-1 | +191521 |
| 5standard | 30 | Okada, Naoya (1669) | Won 2-0 | +201541 |
| 6standard | 36 | Hamada, Yuusai (1545) | Won 2-1 | +181559 |
| 7standard | 4 | Nagai, Mamoru (1924) | Won 2-1 | +251584 |
| 8standard | 9 | Takimura, Kazuyuki (2042) | Lost 1-2 | -111573 |
| 9standard | 36 | Saida, Toshihiro (1994) | Lost 1-2 | -101563 |
| 10standard | 59 | Ito, Kenta (1637) | Lost 0-2 | -171546 |
| 11standard | 107 | Miyazono, Takeshi (1745) | Won 2-1 | +221568 |
| 12standard | 78 | Takashima, Daisuke (1637) | Won 2-1 | +191587 |
| 13standard | 42 | Okada, Yuki 4232 (1813) | Lost 0-2 | -141573 |
| 14standard | 57 | Watanabe, Kouhei 8114 (1644) | Won 2-0 | +191592 |
| 15standard | 40 | Sochurek, Petr (2131) | Lost 0-2 | -91583 |
| top | average opponent: 1761record: 8-5 | new rating: 1583 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 107 | Miyamoto, Naoki (1501) | Won 2-0 | +191491 |
| 4sealed | 132 | Asakura, Yoshitomo (1528) | Won 2-1 | +181509 |
| 5sealed | 87 | Hakozaki, Yuta (1465) | Lost 0-2 | -181491 |
| 6sealed | 277 | Yu, Hanyang (1767) | Won 2-0 | +221513 |
| 7sealed | 159 | Makino, Hiroyuki (1717) | Lost 1-2 | -141499 |
| 8sealed | 300 | Shima, Junichirou (1553) | Lost 1-2 | -171482 |
| top | average opponent: 1588record: 3-3 | new rating: 1482 | ||
| Grand Prix Taipei 2019 (WAR standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 77 | Pedersen, Magnus (1533) | Lost 1-2 | -181489 |
| 4standard | 207 | Bayrante, Albert (1396) | Lost 0-2 | -191470 |
| 5standard | 372 | Takahashi, Masamichi (1604) | Won 2-0 | +201490 |
| 6standard | 288 | Tonggoy, Yutthanagorn (1497) | Lost 1-2 | -181472 |
| top | average opponent: 1508record: 1-3 | new rating: 1472 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 186 | Fujiwara, Mizuki (1545) | Lost 1-2 | -151399 |
| 4standard | 375 | Nishi, Eiichi (1511) | Lost 1-2 | -161383 |
| 5standard | 670 | Deng, Jun (1633) | Won 2-0 | +221405 |
| 6standard | 553 | Hirai, Eisuke (1519) | Won 2-0 | +201425 |
| 7standard | 296 | Suzuki, Fumito (1602) | Won 2-1 | +221447 |
| 8standard | 309 | Kimura, Yu7770 (1587) | Won 2-0 | +201467 |
| 9standard | 125 | Inoue, Kohey (1503) | Lost 1-2 | -171450 |
| 10standard | 181 | Kurokawa, Kazuaki (1512) | Won 2-1 | +191469 |
| 11standard | 137 | Sato, Motohiko (1775) | Won 2-1 | +231492 |
| 12standard | 103 | Yoshimori, Sho (1673) | Won 2-0 | +221514 |
| 13standard | 61 | Sawahata, Atsushi (1655) | Won 2-1 | +201534 |
| 14standard | 56 | Muroya, Ryusei (1649) | Lost 1-2 | -161518 |
| 15standard | 69 | Yotsumoto, Yuki (1898) | Lost 0-2 | -111507 |
| top | average opponent: 1620record: 8-5 | new rating: 1507 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 558 | Ma, Junjie (1464) | Lost 0-2 | -181421 |
| 4standard | 518 | Yaegasi, Naoki (1525) | Won 2-1 | +201441 |
| 5standard | 531 | Urano, Shota (1552) | Lost 1-2 | -161425 |
| 6standard | 572 | Shoji, Kenta (1577) | Won 2-0 | +211446 |
| 7standard | 357 | Adachi, Yoshikazu (1544) | Lost 1-2 | -161430 |
| 8standard | 526 | Suzuki, Fumito (1590) | Lost 1-2 | -161414 |
| top | average opponent: 1542record: 2-4 | new rating: 1414 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 282 | Tsuchiya, Hideaki (1957) | Lost 0-2 | -91446 |
| 4sealed | 608 | Shinoda, Akito (1773) | Lost 1-2 | -131433 |
| 5sealed | 787 | Izumisawa, Ryo (1493) | Won 2-0 | +191452 |
| 6sealed | 625 | Miyajima, Kenichi (1513) | Lost 0-2 | -161436 |
| 7sealed | 641 | Huang, Jinghao (1471) | Won 2-0 | +181454 |
| 8sealed | 498 | Leong, Pou Man (1588) | Lost 0-2 | -151439 |
| top | average opponent: 1632record: 2-4 | new rating: 1439 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 200 | Kitagawa, Keiichi (1520) | Lost 0-2 | -171461 |
| 4sealed | 588 | Toshida, Shin'ichi (1472) | Won 2-0 | +181479 |
| 5sealed | 462 | Nagai, Mamoru (1702) | Draw 1-1 | +41483 |
| 6sealed | 357 | Kiyokawa, Hidetoshi (1465) | Lost 1-2 | -181465 |
| 7sealed | 564 | Inoue, Reiichi (1564) | Won 2-0 | +201485 |
| 8sealed | 386 | Jiang, Yida (1642) | Lost 1-2 | -151470 |
| 9sealed | 522 | Yoshikawa, Hidenobu (1660) | Lost 1-2 | -151455 |
| top | average opponent: 1575record: 2-4-1 | new rating: 1455 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 595 | Kihara, Yasuyuki (1460) | Won 2-0 | +171507 |
| 4modern | 196 | Ootani, Nobuhiro (1687) | Lost 1-2 | -151492 |
| 5modern | 500 | Hasebe, Sho (1558) | Lost 1-2 | -161476 |
| 6modern | 790 | Maehara, Kouichi (1563) | Won 2-0 | +191495 |
| 7modern | 285 | Oikawa, Takaaki (1569) | Won 2-1 | +191514 |
| 8modern | 269 | Tanaka, Tarou (1489) | Lost 1-2 | -181496 |
| 9modern | 579 | Sugiyama, Taiki (1522) | Lost 0-2 | -181478 |
| top | average opponent: 1550record: 3-4 | new rating: 1478 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 114 | Willems, Sjoerd (1708) | Lost 0-2 | -141486 |
| 3standard | 1070 | Matsuyama, Takuya (1451) | Won 2-0 | +171503 |
| 4standard | 812 | Yamaguchi, Tomoyuki (1486) | Lost 0-2 | -181485 |
| 5standard | 647 | Araki, Tatsunori (1593) | Lost 0-2 | -161469 |
| 6standard | 1101 | Kamata, Tomoari (1482) | Won 2-0 | +181487 |
| 7standard | 797 | Nakao, Motohiko (1450) | Lost 1-2 | -191468 |
| 8standard | 824 | Imai, Kenta (1651) | Won 2-0 | +221490 |
| top | average opponent: 1546record: 3-4 | new rating: 1490 | ||