Okumura, Genki
Current rating: 1515
Record: 23-21
| Grand Prix Kobe 2014 (modern) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 857 | Ueno, Hideto (1364) | Won 2-1 | +151581 |
| 2modern | 878 | Sano, Keisuke (1433) | Lost 0-2 | -211560 |
| 3modern | 1134 | Iwasaki, Kazuma (1500) | Lost 0-2 | -191541 |
| 4modern | 1062 | Maeda, Masaki (1482) | Won 2-0 | +171558 |
| 5modern | 997 | Hoshiyama, Mizuho (1532) | Won 2-0 | +171575 |
| 6modern | 869 | Inoue, Hiroyuki (1546) | Lost 1-2 | -181557 |
| 7modern | 1014 | Tanaka, Hironao (1531) | Lost 0-2 | -191538 |
| 8modern | 952 | Masuyama, Yuko (1221) | Lost 1-2 | -231515 |
| top | average opponent: 1451record: 3-5 | new rating: 1515 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1574 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 230 | Honda, Takeru (1428) | Won 2-0 | +151589 |
| 2sealed | 207 | Shimono, Atsushi (1466) | Won 2-0 | +161605 |
| 3sealed | 133 | Murakami, Kazuya3837 (1621) | Lost 1-2 | -181587 |
| 4sealed | 142 | Tedori, Kota (1481) | Lost 1-2 | -201567 |
| 5sealed | 304 | Kidowaki, Kazuki (1502) | Won 2-1 | +171584 |
| 6sealed | 160 | Takakuwa, Minoru (1583) | Lost 0-2 | -181566 |
| top | average opponent: 1514record: 3-3 | new rating: 1566 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1621 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 137 | Okamoto, Konosuke (1463) | Lost 0-2 | -201601 |
| 2extended | 226 | Oda, Takushi (1432) | Lost 1-2 | -211580 |
| 3extended | 235 | Shinohara, Kazuaki (1462) | Won 2-1 | +151595 |
| 4extended | 203 | Kamo, Riki (1401) | Lost 0-2 | -211574 |
| top | average opponent: 1440record: 1-3 | new rating: 1574 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1602 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 34 | Kashihara, Motonori (1500) | Won 2-0 | +171619 |
| 3extended | 27 | Takasaki, Yuichi (1692) | Won 2-1 | +191638 |
| 4extended | 15 | Fujita, Tsuyoshi (1810) | Lost 0-2 | -151623 |
| 5extended | 35 | Kobata, Tetsuro (1559) | Lost 0-2 | -191604 |
| 6extended | 69 | Miyasaka, Takeshi (1540) | Won 2-0 | +171621 |
| 7extended | 57 | Kashima, Akihiro (1751) | Lost 1-2 | -161605 |
| 8extended | 80 | Maeda, Shingo (1518) | Won 2-1 | +161621 |
| top | average opponent: 1624record: 4-3 | new rating: 1621 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1607 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 72 | Fujimoto, Koji (1518) | Won 2-0 | +161623 |
| 3sealed | 59 | Uto, Yusaku (1536) | Won 2-1 | +171640 |
| 4sealed | 34 | Fujita, Kenichi (1699) | Lost 0-2 | -171623 |
| 5sealed | 75 | Morimoto, Manabu (1524) | Won 2-1 | +161639 |
| 6sealed | 45 | Arahori, Kazuaki (1752) | Lost 0-2 | -161623 |
| 7sealed | 77 | Sakakibara, Satoshi (1487) | Lost 1-2 | -211602 |
| top | average opponent: 1586record: 3-3 | new rating: 1602 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 29 | Anazawa, Yoshikazu (1518) | Won 2-0 | +181518 |
| 3extended | 6 | Suzuki, Takayuki (1537) | Won 2-1 | +191537 |
| 4extended | 22 | Ono, Yutaro (1553) | Lost 0-2 | -181519 |
| 5extended | 37 | Nomura, Eiji (1595) | Won 2-1 | +191538 |
| 6extended | 57 | Kanda, Satoshi (1546) | Won 2-1 | +181556 |
| 7extended | 20 | Fujita, Kenichi (1665) | Lost 1-2 | -161540 |
| 8extended | 47 | Hayashi, Shinsuke (1713) | Won 2-0 | +221562 |
| 9extended | 26 | Okuyama, Masahide (1581) | Won 2-1 | +181580 |
| 10extended | 11 | Nobushita, Jun (1711) | Won 2-1 | +201600 |
| 11extended | 10 | Harita, Masaru (1616) | Won 2-1 | +191619 |
| 12extended | 31 | Fujita, Osamu (1706) | Lost 0-2 | -171602 |
| 13extended | 10 | Borteh, Alex (1899) | Lost 0-2 | -131589 |
| 14extended | 20 | Takada, Taichi (1552) | Won 2-1 | +181607 |
| top | average opponent: 1630record: 9-4 | new rating: 1607 | ||