Koshiba, Toshi
Current rating: 1500
Record: 4-4
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 781 | Ando, Akira (1540) | Lost 0-2 | -171483 |
| 2sealed | 927 | Watanabe, Yousuke (1429) | Won 2-1 | +171500 |
| 3sealed | 667 | Shibuya, Hikaru (1464) | Lost 0-2 | -191481 |
| 4sealed | 939 | Nomiya, Yohei (1558) | Won 2-1 | +201501 |
| 5sealed | 644 | Soeda, Kohei (1490) | Lost 0-2 | -191482 |
| 6sealed | 837 | Endo, Takatomo (1467) | Won 2-1 | +181500 |
| 7sealed | 757 | Ho, Ming Ho (1554) | Lost 1-2 | -171483 |
| 8sealed | 745 | Sakai, Hironori (1448) | Won 2-0 | +171500 |
| average opponent: 1494record: 4-4 | new rating: 1500 | |||