Owaki, Kosuke
Current rating: 1511
Record: 5-5
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 392 | Ohnishi, Jyunpei (1857) | Lost 0-2 | -121511 |
| record: 0-1 | new rating: 1511 | |||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 438 | Sorada, Shohei (1541) | Won 2-1 | +191519 |
| 2sealed | 24 | Shinzawa, Tomohiro (1555) | Won 2-1 | +181537 |
| 3sealed | 116 | Sorakup, Aekarash (1623) | Won 2-0 | +201557 |
| 4sealed | 31 | Nakamura, Keisuke (1652) | Lost 0-2 | -161541 |
| 5sealed | 106 | Watanabe, Kazuki3719 (1533) | Lost 1-2 | -181523 |
| 6sealed | 172 | Kanda, Akihiro (1473) | Lost 0-2 | -191504 |
| 7sealed | 268 | Hirata, Keisuke4111 (1501) | Won 2-0 | +181522 |
| 8sealed | 172 | Itou, Tomoya (1599) | Won 2-1 | +191541 |
| 9sealed | 128 | Igarashi, Kento (1541) | Lost 1-2 | -181523 |
| average opponent: 1558record: 5-4 | new rating: 1523 | |||