Yamamoto, Keita
Current rating: 1488
Record: 2-3
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 607 | Takeda, Teruhisa (1494) | Won 2-0 | +181518 |
| 2sealed | 372 | Sibata, Kouji (1583) | Lost 0-2 | -171501 |
| 3sealed | 676 | Kitamura, Kazuki (1499) | Won 2-1 | +181519 |
| 4sealed | 694 | Haraguchi, Fernando (1518) | Lost 0-2 | -181501 |
| 5sealed | 890 | Matsumoto, Akihiro (1758) | Lost 0-2 | -131488 |
| average opponent: 1570record: 2-3 | new rating: 1488 | |||