Obi, Atsushi
Current rating: 1640
| Grand Prix Chiba 2016 (legacy) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 252 | Nakamura, Makoto (1379) | Won 2-1 | +151555 |
| 2legacy | 173 | Tsurifune, Takashi (1703) | Won 2-1 | +211576 |
| 3legacy | 539 | Lee, Joon Soo (1736) | Won 2-1 | +211597 |
| 4legacy | 202 | Okamoto, Jin (1797) | Won 2-0 | +221619 |
| 5legacy | 106 | Shikibu, Hayato (1562) | Won 2-0 | +171636 |
| 6legacy | 13 | Watanabe, Yuta (1697) | Lost 1-2 | -171619 |
| 7legacy | 151 | Saitou, Shintaro (1560) | Won 2-0 | +171636 |
| 8legacy | 90 | Sumida, Norihito (1600) | Won 2-1 | +171653 |
| 9legacy | 22 | Sui, Xin (2040) | Lost 1-2 | -111642 |
| 10legacy | 110 | Yoshihara, Shouta (1584) | Lost 1-2 | -191623 |
| 11legacy | 246 | Sim, Daryl (1588) | Won 2-1 | +171640 |
| 12legacy | 107 | Murakami, Toki (1657) | Won 2-1 | +181658 |
| 13legacy | 44 | Satou, Akihiko (1629) | Lost 0-2 | -181640 |
| 14legacy | 130 | Kamimura, Fumihiro (1674) | Won 2-1 | +181658 |
| 15legacy | 74 | Sekikawa, Daichi (1630) | Lost 1-2 | -181640 |
| top | average opponent: 1656record: 10-5 | new rating: 1640 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 57 | Kikuchi, Takashi (1402) | Won 2-0 | +161538 |
| 2sealed | 511 | Oiso, Kenji (1704) | Lost 0-2 | -151523 |
| 3sealed | 792 | Kamiharai, Toshihito (1487) | Won 2-1 | +171540 |
| 4sealed | 419 | Takenaka, Takumi (1629) | Won 2-0 | +201560 |
| 5sealed | 428 | Yanagawa, Hideyuki (1456) | Lost 0-2 | -201540 |
| 6sealed | 683 | Ooshima, Shun (1487) | Lost 1-2 | -191521 |
| 7sealed | 602 | Kasahara, Takuya (1571) | Won 2-0 | +191540 |
| 8sealed | 411 | Takashima, Kosuke (1523) | Won 2-0 | +171557 |
| 9sealed | 476 | Ueno, Wataru (1610) | Lost 0-2 | -171540 |
| top | average opponent: 1541record: 5-4 | new rating: 1540 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2262 | Kazumasa, Akihiro (1409) | Won 2-1 | +161516 |
| 2sealed | 2249 | Hasegawa, Yu (1675) | Won 2-0 | +211537 |
| 3sealed | 2051 | Mochizuki, Yuusuke (1685) | Lost 1-2 | -151522 |
| top | average opponent: 1589record: 2-1 | new rating: 1522 | ||