Hamamoto, Kenji
Current rating: 1636
Record: 68-60-7 (GP) / 4-4 (professional)
- 2000
- 2001
- 2003
- 2004
- 2005
- 2008
- 2009
- 2010
- 2011
- 2012
- 2017
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1658 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 668 | Kudo, Amiru (1430) | Lost 0-2 | -221636 |
| top | record: 0-1 | new rating: 1636 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1668 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 111 | Nagamine, Taito (1460) | Won 2-0 | +141682 |
| 2modern | 398 | Suzuki, Toshiaki (1501) | Won 2-1 | +151697 |
| 3modern | 217 | Yanase, Kaname (1536) | Lost 1-2 | -211676 |
| 4modern | 246 | Shioda, Masaki (1516) | Won 2-1 | +151691 |
| 5modern | 308 | Nakahashi, Yoshihiro (1533) | Lost 0-2 | -211670 |
| 6modern | 245 | Suzuki, Yuya (1505) | Won 2-0 | +151685 |
| 7modern | 305 | Usui, Toru (1530) | Won 2-0 | +151700 |
| 8modern | 168 | Shimada, Masahiko (1604) | Lost 0-2 | -201680 |
| 9modern | 176 | Satou, Masayoshi (1443) | Lost 1-2 | -221658 |
| top | average opponent: 1514record: 5-4 | new rating: 1658 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1651 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 94 | Kobayashi, Shougo (1477) | Won 2-0 | +151666 |
| 2standard | 68 | Tsukahara, Kazuto (1576) | Draw 1-1 | -21664 |
| 3standard | 101 | Ushima, Kousuke (1423) | Won 2-1 | +141678 |
| 4standard | 119 | Itou, Syuhei (1535) | Won 2-1 | +151693 |
| 5standard | 61 | Sakimura, Akihiko (1616) | Lost 1-2 | -191674 |
| 6standard | 117 | Aoki, Shougo (1474) | Won 2-0 | +141688 |
| 7standard | 81 | Yusuke N., (1537) | Lost 1-2 | -201668 |
| top | average opponent: 1520record: 4-2-1 | new rating: 1668 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1667 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 28 | Ohno, Isao (1597) | Won 2-0 | +171684 |
| 2extended | 69 | Muramatsu, Yoshitaka (1518) | Lost 1-2 | -211663 |
| 3extended | 240 | Oonishi, Natsuki (1473) | Won 2-1 | +141677 |
| 4extended | 118 | Harada, Toshiyuki (1630) | Lost 1-2 | -191658 |
| 5extended | 201 | Shimizu, Ryo (1407) | Won 2-0 | +141672 |
| 6extended | 173 | O., Yuki (1518) | Lost 0-2 | -211651 |
| top | average opponent: 1524record: 3-3 | new rating: 1651 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1713 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 189 | Ooshima, Kazuya (1518) | Won 2-1 | +151728 |
| 3standard | 102 | Ishihara, Takashi (1765) | Lost 1-2 | -181710 |
| 4standard | 213 | Igarashi, Jun (1476) | Lost 0-2 | -221688 |
| 5standard | 328 | Saegusa, Nobuyuki (1501) | Lost 1-2 | -211667 |
| top | average opponent: 1565record: 1-3 | new rating: 1667 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1680 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 144 | Nagase, Shougo (1513) | Won 2-0 | +151695 |
| 3extended | 98 | Kohiyama, Wataru (1537) | Won 2-1 | +151710 |
| 4extended | 98 | Shingai, Sara (1646) | Draw 1-1 | -11709 |
| 5extended | 60 | Michibata, Tatsuya (1547) | Won 2-0 | +151724 |
| 6extended | 31 | Shirai, Takayuki (1574) | Draw 1-1 | -31721 |
| 7extended | 79 | Sim, Chapman (1727) | Won 2-1 | +181739 |
| 8extended | 137 | Kusadani, Takehiko (1655) | Lost 1-2 | -201719 |
| 9extended | 93 | Shimura, Ichirou (1824) | Won 2-0 | +201739 |
| 10extended | 59 | Terao, Manato (1508) | Draw 1-1 | -41735 |
| 11extended | 44 | Masuyama, Takuya (1495) | Won 2-0 | +141749 |
| 12extended | 43 | Watanabe, Yuuya (1968) | Lost 0-2 | -141735 |
| 13extended | 54 | Yoshimori, Sho (1685) | Won 2-0 | +171752 |
| 14extended | 32 | Ikawa, Yoshihiko (1803) | Lost 0-2 | -171735 |
| 15extended | 42 | Nakazuka, Yuuki (1529) | Lost 0-2 | -221713 |
| top | average opponent: 1644record: 7-4-3 | new rating: 1713 | ||
| Grand Prix Kitakyushu 2009 (ZEN limited) | starting rating: 1735 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 42 | Koizumi, Hirotoshi (1423) | Won 2-0 | +121747 |
| 3sealed | 64 | Narumiya, Ryuuma (1421) | Lost 1-2 | -231724 |
| 4sealed | 146 | Matousek, Pavel (1804) | Lost 1-2 | -171707 |
| 5sealed | 179 | Hidaka, Yuusuke (1449) | Won 2-0 | +131720 |
| 6sealed | 114 | Kawashima, Yuki (1519) | Lost 1-2 | -211699 |
| 7sealed | 121 | Taira, Shunichi (1634) | Lost 0-2 | -191680 |
| top | average opponent: 1541record: 2-4 | new rating: 1680 | ||
| Pro Tour Honolulu 2009 (Alara block) | starting rating: 1729 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 31 | Fletcher, Geoff (1802) | Lost 1-2 | -161713 |
| 2block | 101 | Anderson, Mattias (1717) | Won 2-0 | +181731 |
| 3block | 143 | Allbright, Bob (1497) | Won 2-0 | +131744 |
| 4block | 28 | Saito, Tomoharu (2150) | Lost 0-2 | -111733 |
| 5block | 84 | Bucher, Manuel (1817) | Won 2-0 | +201753 |
| 6draft | 105 | Saitou, Kotatsu (1554) | Lost 0-2 | -221731 |
| 7draft | 20 | Ludewig, Matthias (1803) | Won 2-0 | +201751 |
| 8draft | 70 | Manfield, Seth (1863) | Lost 0-2 | -161735 |
| top | average opponent: 1775record: 4-4 | new rating: 1735 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1599 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 40 | Kanno, Masayoshi (1522) | Won 2-0 | +171616 |
| 5extended | 6 | Honnami, Tomoyuki (1774) | Won 2-1 | +211637 |
| 6extended | 10 | Shiozu, Ryouma (1851) | Won 2-1 | +221659 |
| 7extended | 38 | Nakajima, Chikara (1807) | Won 2-0 | +201679 |
| 8extended | 11 | Nakamura, Shuhei (2072) | Won 2-0 | +251704 |
| 9extended | 16 | Iyanaga, Junya (2019) | Won 2-0 | +241728 |
| 10extended | 51 | Watanabe, Yuuya (1948) | Lost 1-2 | -141714 |
| 11extended | 14 | Kawamura, Kazushi (1846) | Won 2-1 | +201734 |
| 12extended | 12 | Saito, Tomoharu (2100) | Lost 1-2 | -121722 |
| 13extended | 19 | Chi, Tatsuya (1672) | Won 2-1 | +171739 |
| 14extended | 2 | Okamoto, Jin (1955) | Draw 1-1 | +41743 |
| Qextended | Watanabe, Yuuya (1961) | Lost 1-2 | -141729 | |
| top | average opponent: 1877record: 8-3-1 | new rating: 1729 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1652 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 124 | Okazaki, Hideki (1481) | Won 0-0 | +151667 |
| 2sealed | 121 | Bandou, Junichirou (1724) | Won 2-1 | +191686 |
| 3sealed | 80 | Ito, Atsushi (1683) | Lost 0-2 | -181668 |
| 4sealed | 188 | Kuniyoshi, Yasuhiro (1550) | Lost 1-2 | -201648 |
| 5sealed | 162 | Nagayasu, Ryota (1516) | Lost 0-2 | -201628 |
| 6sealed | 38 | Suzuki, Sadao (1328) | Lost 0-2 | -241604 |
| 7sealed | 59 | Mori, Shouta (1483) | Lost 0-2 | -201584 |
| 8sealed | 23 | Fukushige, Masanori (1428) | Won 2-1 | +151599 |
| top | average opponent: 1524record: 3-5 | new rating: 1599 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1622 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 36 | Sugai, Yasuhito (1537) | Won 2-0 | +161638 |
| 4block | 49 | Sato, Masakatsu (1554) | Won 2-0 | +171655 |
| 5block | 22 | Shoji, Tatsuro (1581) | Won 2-0 | +161671 |
| 6block | 10 | Nakamura, Shuhei (2002) | Won 2-1 | +241695 |
| 7block | 6 | Tsuchiya, Hideaki (1608) | Lost 1-2 | -191676 |
| 8block | 16 | Yasuda, Masahiro (1532) | ID | 01676 |
| 9block | 23 | Kataoka, Asami (1675) | Won 2-0 | +181694 |
| 10block | 7 | Ishida, Itaru (2007) | Lost 1-2 | -131681 |
| 11block | 13 | Kuroda, Masashiro (2010) | Lost 0-2 | -121669 |
| 12block | 23 | Matousek, Pavel (1806) | Lost 0-2 | -151654 |
| 13block | 12 | Kagami, Gen (1596) | Lost 0-2 | -201634 |
| 14block | 28 | Mizutani, Naoki (1626) | Won 2-1 | +181652 |
| top | average opponent: 1711record: 6-5-1 | new rating: 1652 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1611 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 106 | Ono, Makoto (1577) | Won 2-0 | +171628 |
| 4standard | 16 | Iyanaga, Junya (1530) | Won 2-0 | +171645 |
| 5standard | 40 | Nakamura, Shuhei (1842) | Lost 0-2 | -151630 |
| 6standard | 52 | Nakagawa, Yukihiro (1515) | Won 2-1 | +161646 |
| 7standard | 57 | Shiba, Norihito (1481) | Won 2-1 | +151661 |
| 8standard | 22 | Sato, Takatoshi (1557) | Lost 1-2 | -201641 |
| 9standard | 44 | Maggio, Vincent (1570) | Lost 1-2 | -191622 |
| top | average opponent: 1582record: 4-3 | new rating: 1622 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 10 | Takeshita, Toru (1515) | Won 2-1 | +191467 |
| 3block | 99 | Nakahara, Yuuya (1518) | Won 2-0 | +191486 |
| 4block | 46 | Nomura, Eiji (1669) | Lost 0-2 | -151471 |
| 5block | 93 | Hata, Fumihiro (1620) | Lost 1-2 | -151456 |
| 6block | 120 | Iwamura, Ryouichi (1518) | Won 2-0 | +191475 |
| 7block | 139 | Todate, Kouta (1537) | Won 2-1 | +191494 |
| 8block | 53 | Shimada, Masatake (1727) | Won 2-0 | +221516 |
| 9block | 28 | Ishihara, Jun (1737) | Lost 1-2 | -141502 |
| 10block | 62 | Suzuki, Takaaki (1672) | Lost 1-2 | -151487 |
| 11block | 106 | Yamada, Tsutomu (1709) | Won 2-1 | +221509 |
| 12block | 80 | Noguchi, Keita (1573) | Won 2-0 | +201529 |
| 13block | 52 | Kozakai, Yukio (1602) | Won 2-0 | +191548 |
| 14block | 41 | Ishida, Itaru (1937) | Won 2-0 | +251573 |
| 15block | 29 | Sakajo, Yasuhisa (1610) | Won 2-1 | +181591 |
| 16block | 13 | Kawashima, Yoshiyuki (1680) | Won 2-1 | +201611 |
| top | average opponent: 1642record: 11-4 | new rating: 1611 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1480 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 10 | Iwatsuki, Yoshifumi (1518) | Lost 1-2 | -181462 |
| 3sealed | 231 | Maruyama, Takaaki (1461) | Won 2-0 | +181480 |
| 4sealed | 95 | Ogawa, Syunsuke (1680) | Lost 1-2 | -141466 |
| 5sealed | 147 | Katayama, Hidenori (1471) | Lost 1-2 | -181448 |
| top | average opponent: 1533record: 1-3 | new rating: 1448 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 3 | Tomihara, Shinsuke (1532) | Draw 1-1 | +21436 |
| 3extended | 70 | Nakagawa, Yukihiro (1520) | Won 2-1 | +191455 |
| 4extended | 51 | Kawamura, Kazushi (1571) | Won 2-1 | +201475 |
| 5extended | 25 | Miura, Hiroyuki (1553) | Won 2-1 | +201495 |
| 6extended | 12 | Ueno, Kazuki (1591) | Lost 0-2 | -171478 |
| 7extended | 34 | Ohta, Shinji (1455) | Lost 1-2 | -181460 |
| 8extended | 59 | Okuda, Masateru (1539) | Won 2-1 | +201480 |
| top | average opponent: 1537record: 4-2-1 | new rating: 1480 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1407 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 147 | Kurihara, Akihito (1500) | Won 2-0 | +201427 |
| 2sealed | 146 | Sugiki, Takafumi (1519) | Draw 1-1 | +21429 |
| 3sealed | 121 | Ochiai, Hiroaki (1484) | Lost 1-2 | -171412 |
| 4sealed | 203 | Isobe, Masato (1517) | Won 2-1 | +201432 |
| 5sealed | 138 | Kodama, Naoko (1488) | Won 2-1 | +191451 |
| 6sealed | 84 | Akasaka, Tsutomu (1517) | Lost 0-2 | -171434 |
| top | average opponent: 1504record: 3-2-1 | new rating: 1434 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 64 | Inoue, Daisuke (1518) | Won 2-0 | +201455 |
| 3block | 229 | Okada, Yoshiyuki (1518) | Lost 0-2 | -171438 |
| 4block | 262 | Ishimoto, Koichi (1518) | Lost 0-2 | -171421 |
| 5block | 320 | Nakamichi, Yusuke (1500) | Won 2-1 | +201441 |
| 6block | 313 | Ogata, Kosaku (1515) | Lost 1-2 | -171424 |
| 7block | 330 | Shimada, Kazuhiro (1499) | Lost 0-2 | -171407 |
| top | average opponent: 1511record: 2-4 | new rating: 1407 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 142 | Osaki, Motohiro (1500) | Won 2-1 | +191467 |
| 2sealed | 15 | Takahira, Nobumasa (1585) | Won 2-0 | +201487 |
| 3sealed | 30 | Yamada, Sintarou (1536) | Lost 1-2 | -171470 |
| 4sealed | 72 | Moritani, Kazuhiro (1520) | Lost 1-2 | -181452 |
| 5sealed | 125 | Nakai, Hitoshi (1500) | Lost 1-2 | -171435 |
| 6sealed | 127 | Nagao, Hakaru (1454) | Won 2-1 | +191454 |
| 7sealed | 103 | Kamei, Kazuhiko (1423) | Lost 1-2 | -191435 |
| top | average opponent: 1503record: 3-4 | new rating: 1435 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 49 | Sugimoto, Takashi (1518) | Lost 0-2 | -181482 |
| 3extended | 258 | Takigawa, Tetsuo (1499) | Lost 0-2 | -171465 |
| 4extended | 298 | Nakatani, Yugo (1482) | Won 2-0 | +181483 |
| 5extended | 182 | Goto, Takashi (1500) | Lost 0-2 | -181465 |
| 6extended | 224 | Nishijima, Yuichi (1481) | Lost 1-2 | -171448 |
| top | average opponent: 1496record: 1-4 | new rating: 1448 | ||