Yamanaka, Toshihisa
Current rating: 1629
Record: 20-15-4
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1649 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 65 | Katake, Naoki (1532) | Lost 1-2 | -201629 |
| top | record: 0-1 | new rating: 1629 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 22 | Gomersall, Sam (1791) | Won 2-1 | +231551 |
| 5sealed | 19 | Okamoto, Jin (1915) | Draw 1-1 | +61557 |
| 6sealed | 12 | Sakai, Yuuto (1592) | Won 2-1 | +191576 |
| 7sealed | 6 | Bandou, Junichirou (1661) | Won 2-0 | +191595 |
| 8sealed | 4 | Kubota, Kenta (1636) | Won 2-0 | +191614 |
| 9draft | 1 | Kurihara, Shingou (1768) | Lost 0-2 | -151599 |
| 10draft | 8 | Gomersall, Sam (1828) | Won 2-1 | +221621 |
| 11draft | 29 | Shimada, Masatake (1778) | Won 2-1 | +211642 |
| 12draft | 28 | Shoji, Tatsuro (1646) | Won 2-0 | +181660 |
| 13draft | 4 | Shimura, Ichirou (1851) | Lost 1-2 | -151645 |
| 14draft | 2 | Kurihara, Shingou (1791) | Won 2-0 | +211666 |
| Qdraft | Sasaki, Yusuke (Tokyo) (1743) | Lost 0-2 | -171649 | |
| top | average opponent: 1750record: 8-3-1 | new rating: 1649 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 24 | Sasaki, Takeshi (1489) | Won 2-1 | +171531 |
| 2extended | 58 | Tawa, Atsushi (1518) | Draw 1-1 | 01531 |
| 3extended | 69 | Kawahara, Takayuki (1465) | Draw 1-1 | -11530 |
| 4extended | 129 | Sumino, Hironori (1399) | Won 1-0 | +161546 |
| 5extended | 87 | Takagi, Takeshi (1562) | Lost 0-2 | -181528 |
| top | average opponent: 1487record: 2-1-2 | new rating: 1528 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Okuma, Michinari (1500) | Won 2-0 | +191491 |
| 2sealed | 96 | Miyanishi, Youhei (1570) | Won 2-1 | +191510 |
| 3sealed | 16 | Yamaguchi, Shihomi (1535) | Draw 1-1 | 01510 |
| 4sealed | 52 | Yuasa, Kentarou (1630) | Won 2-0 | +211531 |
| 5sealed | 30 | Ishizuka, Yasunari (1552) | Won 1-0 | +181549 |
| 6sealed | 15 | Matsui, Hisataka (1557) | Lost 1-2 | -181531 |
| 7sealed | 38 | Okada, Kou (1574) | Lost 0-2 | -171514 |
| top | average opponent: 1560record: 4-2-1 | new rating: 1514 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 255 | Watanabe, Hirokazu (1500) | Won 2-0 | +191470 |
| 2block | 291 | Ito, Tai (1464) | Lost 0-1 | -181452 |
| 3block | 461 | Kaga, Ayumu (1500) | Won 2-1 | +191471 |
| 4block | 223 | Takeuchi, Hijiri (1518) | Won 2-0 | +191490 |
| 5block | 145 | Kushida, Yasumasa (1520) | Won 2-1 | +181508 |
| 6block | 100 | Shibata, Yuki (1537) | Lost 0-2 | -171491 |
| 7block | 127 | Tanaka, Hisaya (1443) | Lost 1-2 | -191472 |
| top | average opponent: 1497record: 4-3 | new rating: 1472 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 169 | Kuroda, Masashi (1500) | Won 2-0 | +191466 |
| 2sealed | 87 | Kawaguchi, Akifumi (1518) | Lost 1-2 | -171449 |
| 3sealed | 102 | Kikuchi, Yuuji (1518) | Won 2-1 | +191468 |
| 4sealed | 85 | Arai, Kenichiro (1516) | Lost 1-2 | -171451 |
| top | average opponent: 1513record: 2-2 | new rating: 1451 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 47 | Yaguchi, Kanzo (1536) | Lost 0-2 | -171483 |
| 4extended | 87 | Hatta, Tetsuya (1483) | Lost 0-2 | -181465 |
| 5extended | 209 | Kondou, Masataka (1499) | Lost 1-2 | -181447 |
| top | average opponent: 1506record: 0-3 | new rating: 1447 | ||