Okuda, Ken
Current rating: 1439
Record: 9-13
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1407 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 594 | Kumura, Kazuya (1517) | Lost 1-2 | -161391 |
| 2standard | 725 | Yagi, Wataru (1506) | Lost 1-2 | -161375 |
| 3standard | 1175 | Sakurai, Atsushi (1406) | Won 2-1 | +191394 |
| 4standard | 945 | Ohata, Hiroyuki (1485) | Won 2-1 | +201414 |
| 5standard | 860 | Yoneyama, Naoki (1515) | Won 2-0 | +201434 |
| 6standard | 744 | Ishikawa, Naoki (1473) | Won 2-0 | +181452 |
| 7standard | 397 | Yamakawa, Takahiro (1547) | Won 2-1 | +201472 |
| 8standard | 361 | Sato, Yusei (1621) | Lost 1-2 | -151457 |
| 9standard | 566 | Kusakawa, Naoto (1481) | Lost 1-2 | -181439 |
| top | average opponent: 1506record: 5-4 | new rating: 1439 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 655 | Kimura, Minori (1448) | Lost 0-2 | -191444 |
| 2sealed | 640 | Katakai, Masaki (1483) | Lost 0-2 | -171427 |
| 3sealed | 1236 | Kotani, Sunao (1358) | Won 2-1 | +171444 |
| 4sealed | 992 | Horie, Yoshiaki (1345) | Lost 1-2 | -201424 |
| 5sealed | 1102 | Oh, Asato (1504) | Lost 1-2 | -171407 |
| top | average opponent: 1428record: 1-4 | new rating: 1407 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 33 | Yamamoto, Tsuyoshi (1500) | Lost 0-2 | -191501 |
| 2sealed | 422 | Minoshima, Takenori (1431) | Lost 1-2 | -191482 |
| 3sealed | 523 | Murase, Motonori (1402) | Lost 0-2 | -191463 |
| top | average opponent: 1444record: 0-3 | new rating: 1463 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 784 | Sekine, Kiyotaka (1410) | Won 2-0 | +161516 |
| 2sealed | 685 | Kashiwa, Tatsuya (1636) | Lost 0-2 | -151501 |
| 3sealed | 711 | Yohara, Tosho (1503) | Lost 1-2 | -181483 |
| 4sealed | 859 | Mizoguchi, Hideaki (1484) | Won 2-0 | +181501 |
| 5sealed | 784 | Nakata, Yusuke (1558) | Won 2-1 | +191520 |
| top | average opponent: 1518record: 3-2 | new rating: 1520 | ||