Niwa, Kazumasa
Current rating: 1410
Record: 5-11
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1413 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 109 | Chan, Fung Shun (1560) | Lost 0-2 | -151398 |
| 2sealed | 809 | Schaben, Sid (1506) | Lost 1-2 | -171381 |
| 3sealed | 1232 | Kawaramoto, Yuya (1465) | Won 1-0 | +201401 |
| 4sealed | 914 | Nunotani, Kousuke (1555) | Won 2-0 | +211422 |
| 5sealed | 867 | Higashimura, Kazuya (1557) | Won 2-0 | +201442 |
| 6sealed | 680 | Ogawa, Satoshi (1503) | Lost 0-2 | -171425 |
| 7sealed | 751 | Omi, Tatsuya (1530) | Won 2-0 | +201445 |
| 8sealed | 652 | Ishii, Yuki (1470) | Lost 0-1 | -171428 |
| 9sealed | 618 | Kimura, Kakeru (1450) | Lost 1-2 | -181410 |
| average opponent: 1511record: 4-5 | new rating: 1410 | |||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 138 | Matsuyama, Satoshi (1485) | Lost 0-2 | -181482 |
| 4standard | 214 | Ishimura, Shintaro (1539) | Lost 1-2 | -171465 |
| 5standard | 275 | Sibata, Masatosi (1483) | Won 2-0 | +181483 |
| 6standard | 162 | Usui, Toru (1485) | Lost 1-2 | -181465 |
| 7standard | 261 | Kato, Tatsuya (1500) | Lost 1-2 | -171448 |
| 8standard | 224 | Isida, Syouta (1479) | Lost 1-2 | -181430 |
| 9standard | 195 | Yamada, Takashi (1460) | Lost 0-2 | -171413 |
| average opponent: 1490record: 1-6 | new rating: 1413 | |||