Oyaizu, Keigo
Current rating: 1502
Record: 24-30
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1494 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 198 | Takaoka, Yusuke (1459) | Lost 1-2 | -191475 |
| 4pioneer | 552 | Okamura, Marei (1533) | Lost 1-2 | -171458 |
| 5pioneer | 516 | Lee, Hyukjeong (1522) | Lost 1-2 | -171441 |
| 6pioneer | 551 | Urata, Jun (1455) | Won 2-0 | +191460 |
| 7pioneer | 475 | Oshikawa, Akira (1746) | Won 2-1 | +231483 |
| 8pioneer | 314 | Murayama, Yuya (1536) | Won 2-0 | +191502 |
| top | average opponent: 1542record: 3-3 | new rating: 1502 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 104 | Takata, Takumi (1497) | Won 2-1 | +191501 |
| 4standard | 26 | Akaike, Yo (1741) | Won 2-0 | +221523 |
| 5standard | 93 | Mitome, Hiroumi (1553) | Won 2-1 | +181541 |
| 6standard | 32 | Suzuki, Ryo 4084 (1661) | Lost 1-2 | -151526 |
| 7standard | 43 | Yang, Eunje (1733) | Lost 1-2 | -151511 |
| 8standard | 204 | Takemoto, Shintarou (1541) | Lost 1-2 | -171494 |
| top | average opponent: 1621record: 3-3 | new rating: 1494 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 208 | Hamada, Yuusai (1509) | Lost 0-2 | -181482 |
| top | record: 0-1 | new rating: 1482 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 101 | Tanaka, Tomoya (1564) | Won 2-0 | +201457 |
| 4modern | 171 | Ito, Sho (1467) | Won 2-1 | +181475 |
| 5modern | 56 | Mizuno, Yusuke (1707) | Won 2-1 | +221497 |
| 6modern | 44 | Sugaya, Hironobu (1904) | Won 2-1 | +261523 |
| 7modern | 22 | Masukado, Kenta (1952) | Lost 0-2 | -111512 |
| 8modern | 93 | Morikawa, Taichi (1769) | Won 2-0 | +221534 |
| 9modern | 41 | Hata, Hideaki (1725) | Lost 1-2 | -141520 |
| 10modern | 124 | Hikokubo, Shota (1577) | Lost 1-2 | -171503 |
| 11modern | 155 | Hatano, Kazaho (1534) | Won 2-0 | +191522 |
| 12modern | 86 | Fujimoto, Yosuke (1790) | Lost 0-2 | -141508 |
| 13modern | 151 | Wang, Chaofan (1562) | Won 2-0 | +191527 |
| 14modern | 77 | Yanagitani, Kaname (1602) | Lost 0-2 | -161511 |
| 15modern | 106 | Nakamura, Shuhei (1953) | Lost 1-2 | -111500 |
| top | average opponent: 1700record: 7-6 | new rating: 1500 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 247 | Je, Sungeun (1781) | Lost 1-2 | -131445 |
| 4standard | 273 | Ozaki, Kei (1496) | Won 2-0 | +191464 |
| 5standard | 317 | Takata, Kouhei (1674) | Lost 0-2 | -141450 |
| 6standard | 487 | Magata, Kazuto (1558) | Lost 1-2 | -161434 |
| 7standard | 574 | Takimoto, Yusuke (1555) | Lost 0-2 | -161418 |
| 8standard | 502 | Yokotsuka, Yu (1457) | Won 2-0 | +191437 |
| top | average opponent: 1587record: 2-4 | new rating: 1437 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 420 | Xie, Zikai (1730) | Lost 1-2 | -131438 |
| 4standard | 752 | Mizoguchi, Satoru (1386) | Won 2-0 | +171455 |
| 5standard | 328 | Fujiyoshi, Manabu (1602) | Lost 0-2 | -151440 |
| 6standard | 485 | Ishikawa, Hayate (1341) | Won 2-1 | +161456 |
| 7standard | 416 | Miyashiro, Tomoyuki (1600) | Won 2-1 | +201476 |
| 8standard | 343 | Fujii, Yuusaku (1428) | Lost 0-2 | -181458 |
| top | average opponent: 1515record: 3-3 | new rating: 1458 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1438 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 200 | Wen, Yi (1527) | Won 2-0 | +191457 |
| 4sealed | 44 | Aranami, Naoto (1566) | Lost 0-2 | -161441 |
| 5sealed | 492 | Masuda, Iori (1536) | Won 2-1 | +201461 |
| 6sealed | 313 | Kato, Jun (1551) | Lost 0-2 | -161445 |
| 7sealed | 440 | Sun, Guolong (1716) | Lost 0-2 | -141431 |
| 8sealed | 494 | Imazawa, Junpei (1512) | Won 2-0 | +201451 |
| top | average opponent: 1568record: 3-3 | new rating: 1451 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 453 | Tomita, Kazuki (1462) | Won 2-0 | +171499 |
| 2sealed | 187 | Kurata, Kazuyoshi (1522) | Lost 0-2 | -171482 |
| 3sealed | 806 | Miotani, Tomoya (1663) | Won 2-1 | +211503 |
| 4sealed | 492 | Satonaka, Kentarou (1488) | Won 2-1 | +181521 |
| 5sealed | 533 | Igarashi, Hisakazu (1522) | Lost 0-2 | -181503 |
| 6sealed | 643 | Suzuki, Ryo (1696) | Lost 1-2 | -151488 |
| 7sealed | 687 | Shibata, Masato (1520) | Lost 1-2 | -171471 |
| 8sealed | 693 | Ng, Meng Cheong (1688) | Lost 0-2 | -141457 |
| 9sealed | 680 | Ashizawa, Yoshisato (1399) | Lost 1-2 | -191438 |
| top | average opponent: 1551record: 3-6 | new rating: 1438 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 272 | Hayasaki, Yusuke (1483) | Lost 0-2 | -181482 |
| top | record: 0-1 | new rating: 1482 | ||