Ohsumi, Katsutoshi
Current rating: 1321
Record: 0-10-1
| Grand Prix Kobe 2017 (modern) | starting rating: 1372 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 721 | Yamaguchi, Takanobu (1462) | Lost 0-2 | -161356 |
| 2modern | 925 | Shimizu, Motohiro (1388) | Lost 1-2 | -181338 |
| 3modern | 1204 | Yoshida, Shohei (1375) | Lost 0-2 | -171321 |
| average opponent: 1408record: 0-3 | new rating: 1321 | |||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1036 | Hirase, Gun (1500) | Lost 0-2 | -181482 |
| 2modern | 1177 | Takasawa, Kento (1501) | Lost 1-2 | -181464 |
| 3modern | 1246 | Watahiki, Satoru (1440) | Lost 0-2 | -181446 |
| 4modern | 1238 | Abe, Jun (1361) | Draw 1-1 | -21444 |
| 5modern | 1190 | Hashimoto, Shota (1444) | Lost 1-2 | -181426 |
| 6modern | 1135 | Mori, Masaki (1314) | Lost 1-2 | -201406 |
| 7modern | 1065 | Shirai, Yuta (1430) | Lost 0-2 | -171389 |
| 9modern | 953 | Shinkawa, Takuya (1450) | Lost 1-2 | -171372 |
| average opponent: 1430record: 0-7-1 | new rating: 1372 | |||