Hosoda, Masamitsu
Current rating: 1541
Record: 5-3
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 676 | Okada, Masakazu (1550) | Won 2-1 | +191519 |
| 2sealed | 199 | Tsuchiya, Ryuichi (1628) | Lost 1-2 | -161503 |
| 3sealed | 719 | Lee, Jaejeong (1583) | Lost 0-2 | -171486 |
| 4sealed | 1005 | Tobo, Hayato (1484) | Lost 0-2 | -181468 |
| 5sealed | 992 | Fujita, Tatsuya (1462) | Won 2-0 | +181486 |
| 6sealed | 828 | Sakai, Toshinori (1681) | Won 2-1 | +221508 |
| 7sealed | 613 | Mori, Yuta (1425) | Won 2-1 | +161524 |
| 8sealed | 375 | Kodama, Kentaro (1478) | Won 2-0 | +171541 |
| average opponent: 1536record: 5-3 | new rating: 1541 | |||