Kobayashi, Hirotaka
Current rating: 1379
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 466 | Kawahara, Masanobu (1378) | Lost 1-2 | -191414 |
| 2sealed | 617 | Shiozaki, Ryota (1407) | Lost 0-2 | -181396 |
| 3sealed | 1104 | Itakura, Kenichi (1309) | Lost 0-2 | -191377 |
| 4sealed | 1036 | Shimamura, Riku (1473) | Won 2-0 | +201397 |
| 5sealed | 878 | Kita, Masahiro (1436) | Lost 1-2 | -181379 |
| top | average opponent: 1401record: 1-4 | new rating: 1379 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 730 | Tomita, Hiroki (1408) | Won 2-0 | +171468 |
| 2sealed | 10 | Matsumura, Takehiko (1504) | Lost 0-2 | -171451 |
| 3sealed | 631 | Yonezawa, Takuya (1500) | Lost 1-2 | -171434 |
| 4sealed | 802 | Kataoka, Hiroaki (1559) | Lost 0-2 | -161418 |
| 5sealed | 962 | Kawamura, Eiki (1465) | Won 2-0 | +191437 |
| 6sealed | 849 | Ichijo, Kazuto (1266) | Won 2-0 | +151452 |
| 7sealed | 605 | Ishijima, Kazuya (1429) | Lost 1-2 | -191433 |
| top | average opponent: 1447record: 3-4 | new rating: 1433 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 235 | Kubota, Muneaki (1611) | Lost 0-2 | -161484 |
| 2sealed | 576 | Ohara, Satoru (1480) | Won 2-0 | +181502 |
| 3sealed | 900 | Hamada, Akira (1547) | Lost 0-2 | -171485 |
| 4sealed | 1063 | Ozawa, Kensuke (1503) | Lost 1-2 | -181467 |
| 5sealed | 1043 | Hayashi, Masahiko (1429) | Won 2-0 | +171484 |
| 6sealed | 811 | Pinnisch, Markus (1521) | Lost 0-2 | -171467 |
| 7sealed | 856 | Kamoi, Ryo (1579) | Lost 1-2 | -161451 |
| top | average opponent: 1524record: 2-5 | new rating: 1451 | ||