Mizuguchi, Tatsuya
Current rating: 1544
Record: 5-3
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Tanakajima, Tatsuki (1501) | Won 2-1 | +181518 |
| 2sealed | 137 | Wang, Arthur (1772) | Won 2-1 | +231541 |
| 3sealed | 244 | Takesue, Chikara (1745) | Lost 0-2 | -151526 |
| 4sealed | 464 | Furusawa, Reona (1629) | Lost 1-2 | -161510 |
| 5sealed | 680 | Zheng, Peiyuan (1838) | Lost 0-2 | -121498 |
| 6sealed | 685 | Kosaka, Yuki (1505) | Won 2-0 | +181516 |
| 7sealed | 602 | Kounosu, Hiroaki (1098) | Won 2-0 | +111527 |
| 8sealed | 400 | Hayashi, Hisaaki (1477) | Won 2-1 | +171544 |
| average opponent: 1571record: 5-3 | new rating: 1544 | |||