Umezawa, Naoki
Current rating: 1482
Record: 11-13-1
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 132 | Nishida, Masashi (1527) | Lost 0-2 | -171461 |
| 2pioneer | 515 | Kimura, Kazunari (1444) | Won 2-1 | +181479 |
| 3pioneer | 701 | Choi, Jae-Joon (1713) | Won 2-1 | +221501 |
| 4pioneer | 559 | Kamimura, Yohei (1429) | Won 2-0 | +171518 |
| 5pioneer | 168 | Seo, Noboru (1552) | Lost 1-2 | -181500 |
| 6pioneer | 447 | Ieda, Toma (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1527record: 3-3 | new rating: 1482 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 570 | Ootake, Takeshi (1645) | Won 2-1 | +221454 |
| 2modern | 107 | Iida, Ryotaro (1519) | Lost 0-2 | -171437 |
| 3modern | 693 | Yamagishi, Hideaki (1472) | Lost 0-2 | -171420 |
| 4modern | 867 | Makino, Takahito (1423) | Lost 0-2 | -181402 |
| 5modern | 1005 | Nemoto, Naoya (1463) | Won 2-1 | +191421 |
| 6modern | 807 | Akiba, Hiroyuki (1429) | Won 2-1 | +181439 |
| 7modern | 634 | Tsugita, Chihiro (1502) | Won 2-1 | +191458 |
| 8modern | 477 | Wataya, Yosuke (1577) | Won 2-0 | +201478 |
| top | average opponent: 1504record: 5-3 | new rating: 1478 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 142 | Kunita, Keisuke (1500) | Won 2-0 | +181482 |
| 2standard | 228 | Iwasaki, Masayuki (1588) | Lost 1-2 | -161466 |
| 3standard | 532 | Sakurai, Issei (1495) | Lost 0-2 | -171449 |
| 4standard | 865 | Oginuma, Kiichi (1509) | Lost 0-2 | -171432 |
| top | average opponent: 1523record: 1-3 | new rating: 1432 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 353 | Morita, Yuta (1442) | Won 2-0 | +171517 |
| 2standard | 619 | Komada, Katsuya (1646) | Lost 0-2 | -161501 |
| 3standard | 868 | Saito, Naruto (1375) | Lost 1-2 | -201481 |
| 4standard | 1002 | Shirasaka, Satoshi (1464) | Won 2-0 | +181499 |
| 5standard | 871 | Mochizuki, Kaichi (1498) | Lost 0-2 | -181481 |
| 6standard | 809 | Hiroi, Yuta (1486) | Draw 1-1 | 01481 |
| 7standard | 746 | Kurokawa, Ryushi (1538) | Lost 0-2 | -171464 |
| top | average opponent: 1493record: 2-4-1 | new rating: 1464 | ||