Otsuka, Atsushi
Current rating: 1526
Record: 10-8
| Grand Prix Chiba 2016 (legacy) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 649 | Ishiduka, Katuya (1485) | Won 2-0 | +181534 |
| 2legacy | 405 | Kikuchi, Kota (1422) | Won 2-0 | +161550 |
| 3legacy | 234 | Saijo, Yuichi (1586) | Lost 1-2 | -181532 |
| 4legacy | 338 | Maeda, Takayuki (1236) | Lost 0-2 | -231509 |
| 5legacy | 777 | Tsutazawa, Hiroshi (1476) | Lost 1-2 | -191490 |
| 6legacy | 952 | Oguri, Hiroki (1410) | Won 2-1 | +171507 |
| 7legacy | 755 | Hashizume, Yuuya (1546) | Won 2-0 | +191526 |
| 8legacy | 632 | Omura, Ryuji (1491) | Won 2-1 | +171543 |
| 9legacy | 474 | Yamakita, Yuya (1616) | Lost 0-2 | -171526 |
| average opponent: 1474record: 5-4 | new rating: 1526 | |||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2245 | Sun, Kuangda (1487) | Lost 0-2 | -181482 |
| 2sealed | 2437 | Tsuchida, Tatsuaki (1469) | Won 2-1 | +181500 |
| 3sealed | 2294 | Matsumoto, Yuuichi (1501) | Lost 1-2 | -181482 |
| 4sealed | 2339 | Azuma, Tatsuya (1473) | Lost 0-2 | -191463 |
| 5sealed | 2361 | Saito, Tomoe (1463) | Won 2-1 | +181481 |
| 6sealed | 2300 | Hamaguchi, Katsuhiro (1481) | Lost 0-2 | -181463 |
| 7sealed | 2247 | Choi, Young-Il (1408) | Won 2-0 | +171480 |
| 8sealed | 2187 | Obata, Ken (1493) | Won 2-0 | +191499 |
| 9sealed | 2124 | Kwok, Suen Wang (1482) | Won 2-1 | +171516 |
| average opponent: 1473record: 5-4 | new rating: 1516 | |||