Ishihara, Takashi
Current rating: 1533
Record: 82-77-1
- 2002
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2010
- 2011
- 2012
- 2013
- 2014
- 2017
- 2018
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1553 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 670 | Fujii, Takehiro (1519) | Lost 0-2 | -191534 |
| 2standard | 803 | Nakajima, Ryo (1516) | Lost 1-2 | -181516 |
| 3standard | 1052 | Sato, Shota (1469) | Won 2-0 | +171533 |
| 4standard | 881 | Tsuge, Kyohei (1478) | Won 2-1 | +171550 |
| 5standard | 832 | Yamasaki, Takumi (1606) | Lost 1-2 | -171533 |
| top | average opponent: 1518record: 2-3 | new rating: 1533 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 313 | Takakura, Shinichirou (1500) | Won 2-1 | +191501 |
| 4standard | 304 | Itagaki, Yota (1510) | Lost 0-2 | -181483 |
| 5standard | 546 | Kojima, Yoshifumi (1604) | Lost 1-2 | -161467 |
| 6standard | 622 | Murata, Shunya (1552) | Won 2-0 | +191486 |
| 7standard | 497 | Touma, Takahiro (1711) | Won 2-0 | +221508 |
| 8standard | 151 | Komiyama, Kenichiro (1529) | Lost 1-2 | -171491 |
| 9standard | 496 | Miyauchi, Kazutoshi (1535) | Won 2-1 | +191510 |
| 10standard | 217 | Aoki, Yuki (1573) | Lost 1-2 | -171493 |
| 11standard | 397 | Iwasaki, Mitsumasa (1577) | Won 2-1 | +191512 |
| 12standard | 323 | Leung, Sai Ho (1583) | Won 2-1 | +201532 |
| 13standard | 203 | Ichikawa, Norikazu (1621) | Won 2-0 | +191551 |
| 14standard | 168 | Kishihara, Nobuaki (1590) | Lost 0-2 | -171534 |
| 15standard | 208 | Nakamura, Yuta7609 (1593) | Won 2-0 | +191553 |
| top | average opponent: 1575record: 8-5 | new rating: 1553 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 178 | Sato, Keisuke (1638) | Won 2-0 | +201536 |
| 3sealed | 111 | Yoshinaga, Mitsuteru (1798) | Lost 0-2 | -131523 |
| 4sealed | 269 | Koide, Yuichi (1520) | Lost 0-2 | -181505 |
| 5sealed | 212 | Sugisawa, Daiki (1490) | Lost 1-2 | -181487 |
| 6sealed | 271 | Moriya, Ryo (1370) | Lost 0-2 | -201467 |
| 7sealed | 257 | Beppu, Yoshihiro (1465) | Won 2-0 | +171484 |
| 8sealed | 203 | Yoshizawa, Hiromi (1359) | Lost 1-2 | -201464 |
| 9sealed | 179 | Nishimura, Shuji (1465) | Won 2-1 | +181482 |
| top | average opponent: 1513record: 3-5 | new rating: 1482 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 72 | Fusegi, Takanori (1500) | Lost 1-2 | -181494 |
| 3standard | 339 | Fukuda, Yuuki (1529) | Lost 0-2 | -181476 |
| 4standard | 333 | Mori, Syuuichi (1463) | Won 2-1 | +181494 |
| 5standard | 324 | Nishizawa, Yasuhide (1738) | Lost 1-2 | -131481 |
| 6standard | 308 | Ito, Makoto7657 (1485) | Won 2-1 | +181499 |
| 7standard | 240 | Anada, Takashi (1495) | Won 2-0 | +181517 |
| 8standard | 180 | Ishino, Takuya5590 (1485) | Lost 1-2 | -191498 |
| 9standard | 307 | Mizuta, Isamu (1503) | Won 2-1 | +181516 |
| top | average opponent: 1525record: 4-4 | new rating: 1516 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 229 | Takagi, Hideto (1502) | Lost 0-2 | -191497 |
| 3standard | 409 | Miyoshi, Yasufumi (1330) | Lost 0-2 | -211476 |
| 4standard | 518 | Mizutani, Yoshinobu (1468) | Lost 1-2 | -181458 |
| 5standard | 471 | Tawara, Kazumasa (1465) | Won 2-0 | +181476 |
| 6standard | 409 | Imoto, Koichiro (1449) | Won 2-0 | +181494 |
| 7standard | 345 | Suzuki, Kenta (1523) | Won 2-0 | +181512 |
| 8standard | 204 | Adachi, Takaaki (1520) | Won 2-0 | +181530 |
| 9standard | 185 | Nakatsu, Yoshihito (1505) | Lost 1-2 | -181512 |
| top | average opponent: 1470record: 4-4 | new rating: 1512 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 360 | Kameyama, Takeshi (1579) | Lost 0-2 | -181532 |
| 3standard | 453 | Nakamura, Hirokazu (1500) | Won 2-1 | +181550 |
| 4standard | 433 | Miyajima, Jun'Ichi (1742) | Lost 1-2 | -151535 |
| 5standard | 498 | Nozaki, Manabu (1435) | Lost 1-2 | -201515 |
| 6standard | 521 | Baba, Noriyuki (1479) | Lost 1-2 | -181497 |
| 7standard | 514 | Mukasa, Yoshiya (1532) | Won 2-0 | +181515 |
| 8standard | 420 | Harada, Akio (1479) | Won 2-0 | +181533 |
| 9standard | 334 | Yoshida, Kouki (1582) | Lost 0-2 | -171516 |
| top | average opponent: 1541record: 3-5 | new rating: 1516 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 40 | Kurimori, Yuuta (1500) | Lost 1-2 | -201569 |
| 2modern | 457 | Bruner, Nathan (1482) | Lost 0-2 | -191550 |
| top | average opponent: 1491record: 0-2 | new rating: 1550 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 31 | Iwama, Gaku (1491) | Won 2-0 | +161648 |
| 3sealed | 16 | Nasu, Hideki H (1479) | Won 2-0 | +151663 |
| 4sealed | 70 | Ohno, Isao (1611) | Lost 1-2 | -191644 |
| 5sealed | 183 | Takagi, Takeshi (1820) | Lost 0-2 | -151629 |
| 6sealed | 207 | Takada, Masahiro (1518) | Lost 1-2 | -201609 |
| 7sealed | 290 | Durbidge, Levi (1498) | Won 2-0 | +161625 |
| 8sealed | 221 | Aka, Shunsuke (1744) | Lost 1-2 | -161609 |
| 9sealed | 197 | Chang, Che-cheng (1495) | Lost 1-2 | -201589 |
| top | average opponent: 1582record: 3-5 | new rating: 1589 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1738 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 29 | Ooya, Akihiro (1500) | Won 2-0 | +131751 |
| 2standard | 105 | Ishiguro, Satoshi (1555) | Lost 0-2 | -211730 |
| 3standard | 235 | Ichikawa, Takayoshi (1559) | Lost 0-2 | -211709 |
| 4standard | 342 | Sada, Kazutaka (1390) | Lost 0-2 | -241685 |
| 5standard | 309 | Tanimoto, Masashi (1464) | Won 2-0 | +141699 |
| 6standard | 287 | Ishikawa, Naoto (1477) | Lost 0-2 | -221677 |
| 7standard | 241 | Ohori, Akihito (1462) | Lost 0-2 | -221655 |
| 8standard | 208 | Furukawa, Tadataka (1372) | Lost 0-2 | -231632 |
| top | average opponent: 1472record: 2-6 | new rating: 1632 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1765 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 102 | Hamamoto, Kenji (1728) | Won 2-1 | +181783 |
| 4standard | 67 | Kurihara, Tomo (1546) | Lost 0-2 | -231760 |
| 5standard | 126 | Tsukagoshi, Tadaki (1561) | Lost 1-2 | -211739 |
| 6standard | 218 | Nakamura, Keisuke (1581) | Won 2-0 | +151754 |
| 7standard | 97 | Takahashi, Yuta (1847) | Lost 0-2 | -161738 |
| top | average opponent: 1653record: 2-3 | new rating: 1738 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 243 | Murata, Ryousuke (1518) | Won 2-0 | +171613 |
| 3extended | 9 | Saeki, Tomoya (1548) | Won 2-1 | +161629 |
| 4extended | 93 | Chi, Tatsuya (1649) | Won 2-0 | +191648 |
| 5extended | 14 | Yamano, Tatsuto (1426) | Won 2-0 | +141662 |
| 6extended | 7 | Nakayama, Takatsugu (1559) | Won 2-1 | +161678 |
| 7extended | 10 | Yamamoto, Kentaro (1915) | Lost 0-2 | -141664 |
| 8extended | 106 | Sunada, Shougo (1719) | Won 2-0 | +191683 |
| 9extended | 12 | Ikawa, Yoshihiko (1835) | Won 2-0 | +211704 |
| 10extended | 6 | Nakazuka, Yuuki (1572) | Won 2-0 | +161720 |
| 11extended | 4 | Baba, Yasunori (1704) | Lost 0-2 | -191701 |
| 12extended | 7 | Miyashiro, Ronaldo (1638) | Won 2-1 | +171718 |
| 13extended | 9 | Iwasaki, Yuusuke (1899) | Won 2-1 | +211739 |
| 14extended | 4 | Itou, Takanori (1613) | Won 2-0 | +161755 |
| 15extended | 3 | Kim, Min-su (Japan) (1827) | ID | 01755 |
| Qextended | Kuo, Tzu-Ching (1973) | Won 2-0 | +221777 | |
| Sextended | Mori, Katsuhiro (2137) | Lost 0-2 | -121765 | |
| top | average opponent: 1721record: 12-3-1 | new rating: 1765 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 186 | Kawanishi, Akio (1518) | Won 2-1 | +171589 |
| 3standard | 27 | Yamakawa, Hiroaki (1588) | Won 2-0 | +181607 |
| 4standard | 65 | Higashi, Takao (1542) | Won 2-0 | +171624 |
| 5standard | 1 | Goto, Kosuke (1673) | Lost 0-2 | -171607 |
| 6standard | 49 | Ide, Katsuhiro (1670) | Lost 1-2 | -171590 |
| 7standard | 65 | Shiraishi, Tomomi (1509) | Won 2-0 | +161606 |
| 8standard | 75 | Yoshida, Hiroshi (1545) | Won 2-1 | +171623 |
| 9standard | 37 | Nakamura, Hajime (1570) | ID | 01623 |
| 10standard | 7 | Chiba, Akio (1575) | Won 2-1 | +171640 |
| 11standard | 21 | Matsuki, Hitoshi (1623) | Lost 1-2 | -181622 |
| 12standard | 41 | Fujita, Osamu (1887) | Lost 0-2 | -131609 |
| 13standard | 22 | Komuro, Shuu (1898) | Lost 1-2 | -131596 |
| top | average opponent: 1633record: 6-5-1 | new rating: 1596 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1611 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 184 | Tanaka, Yousuke (1632) | Draw 1-1 | +11612 |
| 3standard | 127 | Sokolovsky, Jesse (1517) | Lost 0-2 | -201592 |
| 4standard | 260 | Tatsuhara, Satoshi (1499) | Lost 0-2 | -201572 |
| top | average opponent: 1549record: 0-2-1 | new rating: 1572 | ||
| Grand Prix Hiroshima 2006 (CSP limited) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 75 | Kurashima, Kazuki (1508) | Won 2-1 | +161628 |
| 3sealed | 1 | Shinozuka, Takaaki (1634) | Lost 0-2 | -181610 |
| 4sealed | 82 | Suzuki, Masatsuna (1731) | Won 2-0 | +201630 |
| 5sealed | 56 | Kougo, Toshihide (1609) | Won 2-1 | +181648 |
| 6sealed | 19 | Ikawa, Yoshihiko (1536) | Won 2-1 | +161664 |
| 7sealed | 20 | Kuroda, Ryouhei (1629) | Won 2-0 | +171681 |
| 8sealed | 58 | Tabet, Basam (1562) | Lost 0-2 | -201661 |
| 10draft | 16 | Ikawa, Yoshihiko (1579) | Lost 1-2 | -191642 |
| 11draft | 25 | Chamberlin, Luke (1588) | Lost 1-2 | -191623 |
| 12draft | 23 | Kurihara, Shingou (1671) | Lost 1-2 | -171606 |
| 13draft | 29 | Yamano, Tomoya (1645) | Won 2-1 | +181624 |
| 14draft | 24 | Osawa, Takuya (1891) | Lost 0-2 | -131611 |
| top | average opponent: 1632record: 6-6 | new rating: 1611 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1671 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 10 | Shibuya, Kouichi (1495) | Lost 1-2 | -211650 |
| 4block | 100 | Takahashi, Junya (1684) | Lost 0-2 | -171633 |
| 5block | 144 | Kashiwagura, Naoto (1483) | Lost 0-2 | -211612 |
| top | average opponent: 1554record: 0-3 | new rating: 1612 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1686 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 67 | Miyabe, Kouichi (1594) | Lost 0-2 | -191667 |
| 3sealed | 193 | Yamamoto, Takao (1470) | Won 2-0 | +141681 |
| 4sealed | 172 | Miura, Shuuichi (1628) | Won 2-1 | +171698 |
| 5sealed | 80 | Kaminaka, Takahiro (1520) | Won 2-0 | +151713 |
| 6sealed | 53 | Shirakura, Tsuyoshi (1616) | Lost 0-2 | -201693 |
| 7sealed | 77 | Okumura, Yoshito (1486) | Lost 0-2 | -221671 |
| top | average opponent: 1552record: 3-3 | new rating: 1671 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1726 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 67 | Mouri, Takemasa (1663) | Lost 1-2 | -201706 |
| 4standard | 223 | Ito, Kenji (1585) | Lost 1-2 | -201686 |
| top | average opponent: 1624record: 0-2 | new rating: 1686 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1591 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 208 | Yokoi, Shinpei (1455) | Won 2-1 | +161607 |
| 3block | 74 | Hasegawa, Gaku (1517) | Lost 1-2 | -201587 |
| 4block | 186 | Okawa, Yusuke (1528) | Won 2-0 | +171604 |
| 5block | 110 | Takahashi, Noboru (1491) | Won 2-0 | +161620 |
| 6block | 53 | Ushie, Yuuta (1535) | Lost 0-2 | -191601 |
| 7block | 80 | Katayama, Hidenori (1444) | Won 2-1 | +151616 |
| 8block | 86 | Tazawa, Jun (1539) | ID | 01616 |
| 9block | 78 | Fujino, Kimihiro (1569) | Won 2-0 | +171633 |
| 10block | 54 | Kubouchi, Naoki (1640) | Won 2-0 | +181651 |
| 11block | 28 | Tanaka, Jun'ichi (1526) | Won 2-0 | +161667 |
| 12block | 21 | Ito, Yoshimasa (1628) | Won 2-0 | +171684 |
| 13block | 11 | Ando, Reiji (1666) | Won 2-0 | +181702 |
| 14block | 6 | Taru, Genki (1701) | Won 2-1 | +181720 |
| 15block | 4 | Nomura, Eiji (1767) | Won 2-1 | +191739 |
| 16block | 2 | Morita, Masahiko (2016) | Lost 0-2 | -131726 |
| top | average opponent: 1602record: 11-3-1 | new rating: 1726 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 162 | Yasutomi, Hiroto (1529) | Won 2-1 | +181542 |
| 2sealed | 21 | Kuze, Shouta (1483) | Won 2-0 | +171559 |
| 3sealed | 48 | Itou, Shin (1566) | Lost 1-2 | -181541 |
| 4sealed | 108 | Ohige, Tatsuya (1475) | Won 2-1 | +171558 |
| 5sealed | 87 | Matsuki, Takashi (1573) | Lost 0-2 | -181540 |
| 6sealed | 87 | Tamai, Katsuyoshi (1503) | Won 2-0 | +171557 |
| 7sealed | 73 | Kushibe, Toshiki (1483) | Won 2-0 | +171574 |
| 8sealed | 31 | Koyama, Takuma (1554) | Won 2-1 | +171591 |
| top | average opponent: 1521record: 6-2 | new rating: 1591 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Kawakami, Hiroshi (1500) | Won 2-0 | +181518 |
| 2sealed | 55 | Ito, Takahiro(Nagano) (1518) | Won 2-0 | +181536 |
| 3sealed | 90 | Itou, Tadashi (1537) | Won 2-1 | +181554 |
| 4sealed | 10 | Fukui, Yohei (1522) | Lost 1-2 | -191535 |
| 5sealed | 56 | Miyazaki, Hidetaka (1550) | Won 2-1 | +191554 |
| 6sealed | 24 | Hayashi, Shinsuke (1685) | Won 2-0 | +201574 |
| 7sealed | 29 | Tachibana, Satoshi (1567) | Lost 0-2 | -181556 |
| 8sealed | 135 | Watanabe, Hiroto (1602) | Won 2-0 | +191575 |
| 9rochester | 24 | Ozawa, Takahiro (1579) | Lost 0-2 | -181557 |
| 10rochester | 30 | Sugiki, Takafumi (1597) | Lost 0-2 | -171540 |
| 11rochester | 31 | Satou, Yuuryou (1529) | Won 2-1 | +171557 |
| 12rochester | 25 | Tsushima, Yusuke (1634) | Lost 0-2 | -161541 |
| 13rochester | 21 | Sato, Hitoshi (1584) | Lost 0-2 | -171524 |
| top | average opponent: 1569record: 7-6 | new rating: 1524 | ||