Matoba, Kosuke
Current rating: 1458
Record: 4-6
| Grand Prix Yokohama 2019 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 145 | Hisamatsu, Hiromu (1428) | Won 2-1 | +171513 |
| 2modern | 37 | Ohtsuka, Fukuo (1525) | Lost 1-2 | -181495 |
| 3modern | 563 | Kumagae, Kousuke (1461) | Lost 1-2 | -181477 |
| 4modern | 930 | Kurokawa, Kazuaki (1413) | Lost 1-2 | -191458 |
| average opponent: 1457record: 1-3 | new rating: 1458 | |||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 470 | Yamamoto, Kazuaki (1443) | Lost 1-2 | -191481 |
| 2legacy | 424 | Hagiwara, Kenichi (1518) | Lost 1-2 | -171464 |
| 3legacy | 660 | Kimoto, Keiya (1324) | Won 2-1 | +151479 |
| 4legacy | 495 | Shagla-McKotch, Alexander (1521) | Won 2-1 | +191498 |
| 5legacy | 307 | Uno, Yuki (1522) | Won 2-1 | +181516 |
| 6legacy | 358 | Sakagami, Taichi (1412) | Lost 1-2 | -201496 |
| average opponent: 1457record: 3-3 | new rating: 1496 | |||