Takahashi, Keiji
Current rating: 1516
Record: 41-46-4
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 507 | Okabe, Tsutomu (1500) | Won 2-0 | +191466 |
| 2sealed | 633 | Takahashi, Kenji (1444) | Lost 1-2 | -191447 |
| 3sealed | 847 | Hashimoto, Keisuke (1654) | Won 2-1 | +221469 |
| 4sealed | 709 | Terada, Tadashi (1591) | Won 2-1 | +201489 |
| 5sealed | 627 | Lim, Jeongmuk (1533) | Lost 0-2 | -171472 |
| 6sealed | 644 | Yoshida, Shintarou (1581) | Lost 1-2 | -161456 |
| 7sealed | 731 | Maeda, Yoshiro (1499) | Won 2-0 | +191475 |
| 8sealed | 680 | Shibata, Daisuke (1503) | Won 2-0 | +181493 |
| 9sealed | 604 | Kobayashi, Takahito (1748) | Won 2-0 | +231516 |
| top | average opponent: 1561record: 6-3 | new rating: 1516 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 349 | Furukawa, Kazuya (1510) | Lost 1-2 | -171458 |
| 2sealed | 378 | Sugiyama, Wataru (1462) | Won 2-0 | +181476 |
| 3sealed | 303 | Satou, Ryota8302 (1505) | Lost 0-2 | -171459 |
| 4sealed | 427 | Ito, Jun (1537) | Won 2-1 | +191478 |
| 5sealed | 297 | Sugaya, Hironobu (1744) | Lost 0-2 | -131465 |
| 6sealed | 317 | Koyama, Mitsuru (1462) | Lost 0-2 | -181447 |
| top | average opponent: 1537record: 2-4 | new rating: 1447 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 329 | Katoh, Daisuke (Shizuoka) (1500) | Draw 1-1 | +11456 |
| 2modern | 421 | Tanabe, Daisuke (1562) | Won 2-1 | +201476 |
| 3modern | 276 | Iwami, Masaki (1518) | Lost 1-2 | -181458 |
| 4modern | 480 | Takahashi, Teruyoshi (1407) | Lost 0-2 | -191439 |
| 5modern | 572 | Masuyama, Yuko (1333) | Won 2-0 | +161455 |
| 6modern | 441 | Ueda, Yushi (1478) | Won 2-0 | +191474 |
| 7modern | 323 | Satou, Masanori (1520) | Won 2-1 | +191493 |
| 8modern | 223 | Tsujii, Takahito (1533) | Lost 1-2 | -181475 |
| top | average opponent: 1481record: 4-3-1 | new rating: 1475 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 26 | Jun M., (1500) | Lost 1-2 | -181471 |
| 2standard | 226 | Kawahara, Ryouta (1482) | Lost 0-2 | -181453 |
| 3standard | 312 | Kondou, Keiichi (1564) | Won 2-0 | +201473 |
| 4standard | 308 | Wu, Jun-Shain (1460) | Lost 0-2 | -181455 |
| top | average opponent: 1501record: 1-3 | new rating: 1455 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 83 | Arita, Ryuichi (1890) | Lost 0-2 | -111503 |
| 5standard | 124 | Ishikawa, Masami (1533) | Won 2-1 | +181521 |
| 6standard | 43 | Suzuki, Hiroumi (1615) | Won 2-1 | +201541 |
| 7standard | 73 | Asahara, Akira (1955) | Lost 0-2 | -111530 |
| 8standard | 61 | Nakajima, Chikara (1714) | Won 2-1 | +211551 |
| 9standard | 61 | iwase, yoshikazu (1520) | ID | 01551 |
| 10standard | 56 | Iwama, Hirokazu (1585) | Lost 0-2 | -171534 |
| 11standard | 62 | Orsini Jones, Matteo (1721) | Lost 1-2 | -151519 |
| 12standard | 61 | Chiba, Akio (1700) | Lost 0-2 | -141505 |
| 13standard | 61 | Naka, Keiji (1485) | Lost 0-2 | -191486 |
| 14standard | 21 | Sakurai, Yuuta (1529) | Won 2-1 | +191505 |
| 15standard | 4 | Nitobe, Takayuki (1585) | Lost 1-2 | -161489 |
| top | average opponent: 1653record: 4-7-1 | new rating: 1489 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 261 | Yamaguchi, Eiki (1500) | Lost 0-2 | -181493 |
| 2extended | 474 | Takeda, Kazuki (1552) | Won 2-1 | +191512 |
| 3extended | 191 | Watanabe, Kazuya (1500) | Lost 0-2 | -181494 |
| 4extended | 398 | Tamura, Satoshi (1483) | Won 2-1 | +181512 |
| 5extended | 370 | Kawakami, Hiroshi (1656) | Won 2-1 | +201532 |
| 6extended | 218 | Udagawa, Hisashi (1664) | Won 2-0 | +211553 |
| 7extended | 184 | Ushikubo, Kenichi (1479) | Lost 0-2 | -201533 |
| 8extended | 134 | Takeda, Hiroya (1469) | Lost 1-2 | -191514 |
| top | average opponent: 1538record: 4-4 | new rating: 1514 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 71 | Iizuka, Shun (1576) | Lost 1-2 | -161467 |
| 4standard | 265 | Sasada, Youhei (1517) | Draw 1-1 | +11468 |
| 5standard | 210 | Sugiura, Kiyohiro (1567) | Won 2-1 | +201488 |
| 6standard | 137 | Sakai, Yasuki (1654) | Won 2-1 | +211509 |
| 7standard | 84 | Chou, Takayuki (1568) | Draw 1-1 | +11510 |
| 8standard | 137 | Hirayama, Daisuke (1521) | Won 2-0 | +181528 |
| 9standard | 90 | Aizawa, Keiji (1602) | Lost 1-2 | -171511 |
| top | average opponent: 1572record: 3-2-2 | new rating: 1511 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 114 | Sasaki, Masato (1517) | Won 2-1 | +181533 |
| 3sealed | 63 | Takakuwa, Akihiro (1774) | Lost 0-2 | -141519 |
| 4sealed | 96 | Okamoto, Hiroaki (1520) | Won 2-1 | +181537 |
| 5sealed | 80 | Nakao, Munenari (1481) | Lost 0-2 | -191518 |
| 6sealed | 81 | Miura, Akiyoshi (1511) | Lost 1-2 | -181500 |
| 7sealed | 119 | Ikeda, Akio (1561) | Lost 1-2 | -171483 |
| top | average opponent: 1561record: 2-4 | new rating: 1483 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 119 | Harada, Hiroshi (1514) | Won 2-1 | +191471 |
| 3sealed | 80 | Okugawa, Shoji (1628) | Lost 1-2 | -151456 |
| 4sealed | 83 | Kim, Jang-hong (1525) | Won 2-1 | +191475 |
| 5sealed | 96 | Yokosuka, Tomohiro (1808) | Won 2-1 | +241499 |
| 6sealed | 61 | Yasutomi, Hiroto (1586) | Won 2-1 | +201519 |
| 7sealed | 20 | Otsubo, Yuji (1781) | Won 2-0 | +221541 |
| 8sealed | 18 | Ooshiro, Hideto (1669) | ID | 01541 |
| 9rochester | 12 | Fujita, Osamu (1904) | Lost 0-2 | -111530 |
| 10rochester | 9 | Mochizuki, Shinichiro (1559) | Lost 0-2 | -181512 |
| 11rochester | 6 | Nakagawa, Yu (1536) | Lost 0-2 | -171495 |
| 12rochester | 13 | Kozakai, Yukio (1624) | Won 2-0 | +201515 |
| top | average opponent: 1649record: 6-4-1 | new rating: 1515 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 88 | Okuda, Masateru (1557) | Lost 1-2 | -181523 |
| 3block | 166 | Niimi, Kiyoaki (1491) | Won 2-0 | +181541 |
| 4block | 181 | Mori, Takashi(Ehime) (1518) | Won 2-0 | +171558 |
| 5block | 131 | Hashimoto, Yuu(Ibaraki) (1538) | Draw 0-0 | 01558 |
| 6block | 109 | Ikeda, Tsuyoshi (1734) | Won 2-1 | +211579 |
| 7block | 65 | Yamakawa, Hiroyuki (1554) | Won 2-1 | +181597 |
| 8block | 37 | Kataoka, Asami (1581) | Lost 1-2 | -191578 |
| 9block | 86 | Tanaka, Jun'ichi (1486) | Lost 0-2 | -191559 |
| 10block | 105 | Matousek, Pavel (1598) | Lost 1-2 | -181541 |
| 11block | 115 | Ikeda, Kei (1497) | Lost 1-2 | -181523 |
| 12block | 110 | Tateno, Shouta (1502) | Lost 0-2 | -191504 |
| 14block | 87 | Tsuchiya, Heinrich (1536) | Lost 0-2 | -171487 |
| 15block | 75 | Terada, Atsushi (1562) | Lost 1-2 | -171470 |
| 16block | 69 | Takagi, Kuniyuki (1451) | Lost 0-2 | -181452 |
| top | average opponent: 1543record: 4-9-1 | new rating: 1452 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 52 | Okuda, Masatoshi (1500) | Lost 0-2 | -181482 |
| 2sealed | 280 | Tanaka, Tomonori (1478) | Won 2-1 | +181500 |
| 3sealed | 138 | Takada, Ryutaro (1500) | Won 2-0 | +181518 |
| 4sealed | 92 | Yanagi, Hiroki (1489) | Lost 1-2 | -191499 |
| 5sealed | 201 | Kise, Masato (1627) | Won 2-1 | +211520 |
| 6sealed | 105 | Ikeda, Daisuke (1520) | Won 2-0 | +181538 |
| 7sealed | 78 | Sato, Kimihiko (1649) | Won 2-0 | +201558 |
| 8sealed | 146 | Nonishi, Keiichiro (1630) | Lost 0-2 | -171541 |
| top | average opponent: 1549record: 5-3 | new rating: 1541 | ||