Maruyama, Tomoyuki
Current rating: 1503
Record: 3-3
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 99 | Kushida, Takafumi (1481) | Won 2-0 | +181518 |
| 2sealed | 406 | Mita, Yoshihito (1469) | Won 2-0 | +171535 |
| 3sealed | 436 | Fujitani, Masahiro (1545) | Lost 0-2 | -181517 |
| 4sealed | 631 | Miyake, Hideyuki (1687) | Lost 0-2 | -151502 |
| 5sealed | 594 | Shiina, Daisuke (1407) | Won 2-1 | +161518 |
| 6sealed | 359 | Kosaka, Kazune (1648) | Lost 0-2 | -151503 |
| average opponent: 1540record: 3-3 | new rating: 1503 | |||