Shimazaki, Keita
Current rating: 1377
Record: 8-18
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1369 | |||
| round | table | opponent (rating) | result | Δrating |
| 3pioneer | 228 | Kihara, Ryou (1706) | Won 2-0 | +241393 |
| 4pioneer | 56 | Kobayashi, Yosuke (1647) | Lost 1-2 | -141379 |
| 5pioneer | 286 | Ikeda, Takahiro (1754) | Lost 1-2 | -111368 |
| 6pioneer | 509 | Katou, Yuuta (1676) | Won 2-1 | +231391 |
| 7pioneer | 368 | Suzuki, Tomohiro (1571) | Lost 0-2 | -141377 |
| top | average opponent: 1671record: 2-3 | new rating: 1377 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 219 | Ootsuka, Shintaro (1565) | Lost 1-2 | -161415 |
| 4standard | 513 | Nagao, Taku (1486) | Lost 1-2 | -171398 |
| 5standard | 472 | Tsuzuki, Makoto (1537) | Lost 0-2 | -151383 |
| 6standard | 623 | Ichino, Takahito (1615) | Lost 1-2 | -141369 |
| top | average opponent: 1551record: 0-4 | new rating: 1369 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 88 | Urabe, Ryosuke (1556) | Lost 1-2 | -161437 |
| 4sealed | 506 | Sato, Takatoshi (1792) | Lost 0-2 | -121425 |
| 5sealed | 738 | Yoshino, Shumpei (1506) | Won 2-0 | +201445 |
| 6sealed | 660 | Toyoda, Tomoyuki (1521) | Lost 1-2 | -171428 |
| 7sealed | 573 | Kobayashi, Yuki 7473 (1505) | Won 2-0 | +191447 |
| 8sealed | 423 | Iwama, Gaku (1510) | Lost 0-2 | -161431 |
| top | average opponent: 1565record: 2-4 | new rating: 1431 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 391 | Gotoda, Keigo (1538) | Won 2-0 | +191505 |
| 4standard | 137 | Takeshita, Toru (1704) | Lost 1-2 | -141491 |
| 5standard | 394 | Furujou, Takashi (1309) | Lost 0-2 | -221469 |
| 6standard | 450 | Inui, Takashi (1569) | Lost 1-2 | -161453 |
| top | average opponent: 1530record: 1-3 | new rating: 1453 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 275 | Kodama, Kentaro (1419) | Won 2-0 | +171517 |
| 3standard | 391 | Tsukahara, Kazuto (1707) | Lost 0-2 | -151502 |
| 4standard | 731 | Yagi, Wataru (1530) | Lost 0-2 | -181484 |
| 5standard | 881 | Yamamoto, Ryousuke (1503) | Won 2-1 | +191503 |
| 6standard | 623 | Li, Youchen (1528) | Won 2-1 | +181521 |
| 7standard | 423 | Katou, Takeru (1404) | Lost 1-2 | -201501 |
| 8standard | 525 | Shingo, Tanaka (1659) | Lost 1-2 | -151486 |
| top | average opponent: 1536record: 3-4 | new rating: 1486 | ||