Okumura, Katsuhiko
Current rating: 1531
Record: 31-31-2 (GP) / 5-9 (professional)
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 72 | Katou, Yoshitaka (1516) | Won 2-1 | +181528 |
| 2standard | 240 | Mizuta, Isamu (1519) | Won 2-1 | +181546 |
| 3standard | 145 | Miyajima, Jun'Ichi (1764) | Won 2-0 | +221568 |
| 4standard | 110 | Lee, Ki PPeum (1475) | Lost 1-2 | -201548 |
| 5standard | 371 | Honda, Jun'Ichi (1587) | Lost 0-2 | -171531 |
| top | average opponent: 1572record: 3-2 | new rating: 1531 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 75 | Suzuki, Joshua (1500) | Won 2-0 | +191483 |
| 2extended | 25 | Yanagida, Yuya (1424) | Won 2-1 | +171500 |
| 3extended | 13 | Omori, Ken'ichirou (1546) | Lost 1-2 | -181482 |
| 4extended | 146 | Suzumura, Tatsurou (1376) | Won 2-1 | +171499 |
| 5extended | 68 | Tsuboyama, Shuta (1439) | Won 2-1 | +161515 |
| 6extended | 57 | Nakamura, Hajime (1708) | Lost 0-2 | -141501 |
| 7extended | 140 | Miyashita, Kazuki (1521) | Won 2-1 | +181519 |
| 8extended | 69 | Matsumura, Takehiko (1426) | Won 2-1 | +171536 |
| 9extended | 21 | Matsuoka, Tomohide (1741) | Lost 1-2 | -151521 |
| 10extended | 15 | Sekine, Kiyotaka (1577) | Won 2-1 | +191540 |
| 11extended | 4 | Tashiro, Kouichi (1672) | Won 2-0 | +211561 |
| 12extended | 26 | Yasuda, Taiga (1577) | Lost 0-2 | -181543 |
| 13extended | 14 | Kurakami, Shun (1724) | Lost 0-2 | -151528 |
| 14extended | 45 | Tamura, Tomoaki (1519) | Lost 1-2 | -181510 |
| top | average opponent: 1554record: 8-6 | new rating: 1510 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 64 | Hashimoto, Naoya (1500) | Lost 1-2 | -171420 |
| 2block | 245 | Sugawara, Hajime (1448) | Won 2-1 | +191439 |
| 3block | 175 | Fukutani, Yuushou (1466) | Won 2-1 | +181457 |
| 4block | 120 | Kuribayashi, Tatsunori (1486) | Lost 1-2 | -171440 |
| 5block | 289 | Yonezawa, Hajime (1464) | Won 2-1 | +181458 |
| 6block | 148 | Ikawa, Yoshihiko (1590) | Won 2-0 | +211479 |
| 7block | 152 | Ishii, Taisuke (1674) | Lost 0-2 | -151464 |
| top | average opponent: 1518record: 4-3 | new rating: 1464 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1406 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 141 | Tsuyuki, Kouichi (1482) | Won 2-1 | +191425 |
| 2standard | 128 | Itou, Takanori (1480) | Won 2-1 | +191444 |
| 3standard | 70 | Fujimori, Masayoshi (1537) | Draw 1-1 | +21446 |
| 4standard | 94 | Itou, Shuuhei (1598) | Lost 0-2 | -151431 |
| 5standard | 177 | Matsumura, Hideyuki (1505) | Lost 0-2 | -171414 |
| 6standard | 242 | Inazawa, Ryo (1521) | Won 2-1 | +201434 |
| 7standard | 62 | Tanikawa, Masato (1518) | Lost 1-2 | -171417 |
| 8standard | 4 | Kanaya, Yoshihisa (1501) | Won 2-1 | +201437 |
| top | average opponent: 1518record: 4-3-1 | new rating: 1437 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 63 | Inuzuka, Satoshi (1500) | Lost 0-2 | -171422 |
| 2sealed | 112 | Ogata, Atsushi (1497) | Lost 1-2 | -161406 |
| top | average opponent: 1498record: 0-2 | new rating: 1406 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 35 | Endou, Nozomu (1483) | Lost 0-2 | -181435 |
| 3standard | 234 | Kawakami, Kazuto (1500) | Won 2-1 | +201455 |
| 4standard | 117 | Kashima, Akihiro (1613) | Lost 0-2 | -161439 |
| top | average opponent: 1532record: 1-2 | new rating: 1439 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 97 | Tanaka, Takayuki (1482) | Lost 0-2 | -181470 |
| 3sealed | 102 | Aoki, Satoshi (1498) | Lost 0-2 | -171453 |
| top | average opponent: 1490record: 0-2 | new rating: 1453 | ||
| Pro Tour Los Angeles 2005 (extended) | starting rating: 1505 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 95 | Herberholz, Mark (1884) | Lost 0-2 | -111494 |
| 2extended | 131 | Von Kalkstein, Christian (1673) | Won 2-0 | +211515 |
| 3extended | 76 | Beeton, James (1680) | Lost 0-2 | -151500 |
| 4extended | 142 | Tinnell, Michael (1492) | Won 2-1 | +181518 |
| 5extended | 67 | Szleifer, Gadiel (1952) | Lost 0-2 | -111507 |
| 6extended | 92 | Rahamim, Avri (1456) | Lost 1-2 | -191488 |
| top | average opponent: 1689record: 2-4 | new rating: 1488 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 34 | Ishibashi, Masaoki (1519) | Won 2-0 | +181497 |
| 3block | 73 | Ohno, Isao (1685) | Lost 0-2 | -141483 |
| 4block | 86 | Miyajima, Yoshitaka (1640) | Won 2-1 | +211504 |
| 5block | 71 | Matsuyama, Hikaru (1488) | Draw 1-1 | -11503 |
| 6block | 83 | Matsui, Kazuki (1543) | Won 2-1 | +191522 |
| 7block | 45 | Nogami, Masahiro (1583) | Lost 0-2 | -171505 |
| top | average opponent: 1576record: 3-2-1 | new rating: 1505 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 46 | Yamada, Hiroki (1514) | Won 2-1 | +191461 |
| 2sealed | 19 | Hoshino, Fumio (1557) | Won 2-0 | +201481 |
| 3sealed | 78 | Fuma, Masaharu (1654) | Won 2-1 | +211502 |
| 4sealed | 16 | Fujita, Osamu (1806) | Won 2-0 | +241526 |
| 5sealed | 3 | Goto, Kosuke (1687) | Lost 0-2 | -161510 |
| 6sealed | 81 | Kashima, Akihiro (1680) | Lost 1-2 | -151495 |
| 7sealed | 70 | Ooura, Shotaro (1563) | Lost 0-2 | -161479 |
| top | average opponent: 1637record: 4-3 | new rating: 1479 | ||
| Pro Tour Columbus 2004 (extended) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 11 | Abrams, Matt (1538) | Won 2-1 | +201487 |
| 2extended | 48 | Esposito, Marco (1556) | Lost 0-2 | -171470 |
| 3extended | 53 | Meader, Matthew (1500) | Lost 1-2 | -181452 |
| 4extended | 106 | Kambourakis, Joseph (1518) | Lost 1-2 | -161436 |
| 5extended | 112 | Rue, Charlie (1516) | Lost 1-2 | -171419 |
| 6extended | 117 | Gulinski, Sebastian (1560) | Lost 1-2 | -151404 |
| 7extended | 106 | Noorlander, Niels (1436) | Won 2-1 | +181422 |
| 8extended | 86 | Germar, Richard (1520) | Won 2-1 | +201442 |
| top | average opponent: 1518record: 3-5 | new rating: 1442 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 112 | Imaizumi, Kenji (1583) | Won 2-1 | +201520 |
| 2standard | 56 | Kushibe, Toshiki (1601) | Lost 0-2 | -171503 |
| 3standard | 346 | Kozakai, Yukio (1545) | Lost 1-2 | -171486 |
| 4standard | 383 | Toochika, Takayuki (1444) | Lost 0-2 | -191467 |
| top | average opponent: 1543record: 1-3 | new rating: 1467 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 185 | Akiyama, Hayato (1500) | Won 2-0 | +181518 |
| 2block | 143 | Hayakawa, Shinnosuke (1517) | Won 2-0 | +181536 |
| 3block | 48 | Ohno, Junki (1500) | Lost 0-2 | -191517 |
| 4block | 127 | Hirose, Yuuki (1551) | Lost 0-2 | -171500 |
| 5block | 245 | Takehana, Yuki (1519) | Lost 1-2 | -181482 |
| 6block | 249 | Omata, Yuuji (1482) | Won 2-0 | +181500 |
| top | average opponent: 1511record: 3-3 | new rating: 1500 | ||