Yamagiwa, Shimpei
Current rating: 1485
Record: 3-4
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 437 | Kamiharai, Toshihito (1526) | Lost 1-2 | -181482 |
| 2sealed | 607 | Izawa, Kazuki (1504) | Won 2-0 | +191501 |
| 3sealed | 767 | Song, Shang (1602) | Lost 0-2 | -161485 |
| 4sealed | 872 | Makino, Takashi (1607) | Won 2-0 | +201505 |
| 5sealed | 697 | Takawashi, Kenji (1474) | Lost 0-2 | -191486 |
| 6sealed | 704 | Koike, Tomoyuki (1374) | Won 2-0 | +161502 |
| 7sealed | 609 | Ishii, Kouki (1548) | Lost 0-2 | -171485 |
| average opponent: 1519record: 3-4 | new rating: 1485 | |||