Osako, Sho
Current rating: 1527
Record: 8-7
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 213 | Sasagawa, Hitoshi (1483) | Won 2-1 | +171521 |
| 2sealed | 396 | Sano, Masayo (1436) | Lost 1-2 | -191502 |
| 3sealed | 707 | Kubo, Atsutoshi (1510) | Won 2-0 | +181520 |
| 4sealed | 696 | Hayashi, Katsuji (1425) | Won 2-0 | +161536 |
| 5sealed | 501 | Okuno, Ryohei (1793) | Won 2-1 | +231559 |
| 6sealed | 213 | Kondo, Shogo (1701) | Lost 1-2 | -161543 |
| 7sealed | 392 | Tashiro, Kouhei (1659) | Lost 1-2 | -161527 |
| average opponent: 1572record: 4-3 | new rating: 1527 | |||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 705 | Saito, Ryo 6701 (1500) | Won 2-0 | +181518 |
| 2sealed | 240 | Choi, Jaekyoo (1516) | Won 2-0 | +181536 |
| 3sealed | 287 | Uetsu, Masashi (1537) | Lost 1-2 | -181518 |
| 4sealed | 697 | Hagiwara, Masakatsu (1565) | Lost 0-2 | -171501 |
| 5sealed | 529 | Hasebe, Sho (1564) | Won 2-1 | +191520 |
| 6sealed | 509 | Fujii, Tomoya (1549) | Won 2-0 | +191539 |
| 7sealed | 288 | Takase, Yusuke (1464) | Lost 0-2 | -201519 |
| 8sealed | 364 | Miyagi, Moto (1654) | Lost 1-2 | -151504 |
| average opponent: 1544record: 4-4 | new rating: 1504 | |||