Ishikawa, Masami
Current rating: 1562
Record: 50-45-7
Grand Prix Sendai 2010Grand Prix Yokohama 2012Grand Prix Kobe 2014Grand Prix Kyoto 2015Grand Prix Tokyo 2016Grand Prix Chiba 2016Grand Prix Kobe 2017Grand Prix Las Vegas 2017 (legacy)Grand Prix Las Vegas 2017 (modern)Grand Prix Lyon 2018Grand Prix Prague 2018Grand Prix Shizuoka 2018 (legacy)Grand Prix Yokohama 2019
| Grand Prix Yokohama 2019 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 516 | Takezawa, Kyohei (1495) | Draw 1-1 | 01535 |
| 2modern | 608 | Kitagawa, Takeru (1540) | Won 2-0 | +181553 |
| 3modern | 546 | Sunada, Shougo (1791) | Lost 0-2 | -141539 |
| 4modern | 798 | Iwagami, Takkuya (1500) | Won 2-0 | +171556 |
| 5modern | 539 | Shimada, Masahiko (1826) | Won 2-1 | +231579 |
| 6modern | 344 | Kurita, Yudai (1649) | Lost 0-2 | -171562 |
| top | average opponent: 1634record: 3-2-1 | new rating: 1562 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 485 | Kumagae, Kousuke (1454) | Won 2-0 | +161592 |
| 2legacy | 299 | Williamson, Jonathan (1401) | Lost 0-2 | -221570 |
| 3legacy | 519 | Aizawa, Takahiro (1638) | Lost 0-2 | -161554 |
| 4legacy | 468 | Fujiwara, Ryoji (1540) | Lost 1-2 | -191535 |
| top | average opponent: 1508record: 1-3 | new rating: 1535 | ||
| Grand Prix Prague 2018 (modern) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 333 | Marin, Tudor (1529) | Won 2-1 | +161628 |
| 2modern | 79 | Hittenberger, Konstantin (1501) | Lost 0-2 | -201608 |
| 3modern | 670 | Tuma, Jiri (1698) | Lost 0-2 | -161592 |
| 4modern | 718 | Smits, Malte (1715) | Lost 0-2 | -161576 |
| top | average opponent: 1611record: 1-3 | new rating: 1576 | ||
| Grand Prix Lyon 2018 (modern) | starting rating: 1586 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 496 | Ribera Mas, Joan (1392) | Won 2-0 | +141600 |
| 2modern | 161 | Dolmatov, Dmitry (1627) | Lost 0-1 | -171583 |
| 3modern | 649 | Melone, Catherine (1505) | Won 1-0 | +161599 |
| 4modern | 589 | Fussi, Johannes (1653) | Won 2-0 | +191618 |
| 5modern | 162 | Shao, Qiaosheng (1538) | Lost 0-2 | -191599 |
| 6modern | 296 | Pedron, Tom (1492) | Won 2-0 | +161615 |
| 7modern | 407 | Guluk, Ayk (1511) | Won 2-0 | +161631 |
| 8modern | 264 | Van Deun, Luca (1580) | Lost 0-2 | -191612 |
| top | average opponent: 1537record: 5-3 | new rating: 1612 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 739 | Clabaugh, David (1524) | Won 2-0 | +161651 |
| 2modern | 532 | Pedersen, Curtis (1428) | Lost 0-2 | -221629 |
| 3modern | 1119 | Landes, Adam (1453) | Lost 1-2 | -221607 |
| 4modern | 1350 | Miller, Jason (1397) | Lost 1-2 | -211586 |
| top | average opponent: 1450record: 1-3 | new rating: 1586 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 658 | Rainforth, Chandler (1523) | Lost 1-2 | -191557 |
| 2legacy | 637 | Bingaman, Josh (1563) | Won 2-0 | +181575 |
| 3legacy | 672 | Ulanov, Denis (1740) | Won 2-0 | +211596 |
| 4legacy | 503 | Edwards, Craig (1817) | Won 2-1 | +221618 |
| 5legacy | 288 | Carvalho, Mike (1516) | Won 2-1 | +161634 |
| 6legacy | 225 | Parente, Justin (1754) | Lost 1-2 | -161618 |
| 7legacy | 271 | Langdon, Josh (1574) | Lost 0-2 | -191599 |
| 8legacy | 595 | Maune, Sarah (1478) | Won 2-0 | +161615 |
| 9legacy | 446 | Maloney, Donovan (1498) | Won 2-1 | +161631 |
| 10legacy | 255 | Borakove, Steven (1658) | Lost 0-2 | -181613 |
| 11legacy | 318 | Santomassino, Joseph (1728) | Lost 1-2 | -161597 |
| 12legacy | 284 | Thomas, Neil (1600) | Won 2-0 | +191616 |
| 13legacy | 247 | Ingram, Michael (1534) | Won 2-0 | +161632 |
| 14legacy | 187 | Bauer, David (1872) | Won 2-0 | +221654 |
| 15legacy | 175 | Allen, Nolan (1555) | Lost 1-2 | -191635 |
| top | average opponent: 1627record: 9-6 | new rating: 1635 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1639 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 113 | Maeda, Masaki (1465) | Draw 1-1 | -31636 |
| 3modern | 689 | Iwasa, Takuma (1521) | Lost 0-2 | -201616 |
| 4modern | 929 | Daikai, Rikiya (1473) | Lost 0-2 | -201596 |
| 5modern | 1082 | Ono, Kentaro (1487) | Lost 0-2 | -201576 |
| top | average opponent: 1486record: 0-3-1 | new rating: 1576 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 560 | Suzuki, Yuto (1500) | Won 2-0 | +171606 |
| 2legacy | 203 | Kobayashi, Ryosuke (1587) | Won 2-0 | +181624 |
| 3legacy | 47 | Hasegawa, Tsuguto (1520) | Won 2-1 | +161640 |
| 4legacy | 52 | Polak-Rottmann, Oliver (1984) | Won 2-1 | +241664 |
| 5legacy | 76 | Liu, Jin (1678) | Lost 1-2 | -181646 |
| 6legacy | 307 | Kawabata, Yuu (1428) | Won 2-1 | +141660 |
| 7legacy | 82 | Togores, Rodrigo (1791) | Lost 0-2 | -161644 |
| 8legacy | 253 | Ookawa, Yuusuke (1623) | Won 2-0 | +181662 |
| 9legacy | 164 | Tamura, Ryo (1816) | Lost 1-2 | -151647 |
| 10legacy | 200 | Narita, Kousei (1547) | Won 2-1 | +161663 |
| 11legacy | 193 | Sakurabayashi, Gaku (1507) | Won 2-0 | +151678 |
| 12legacy | 73 | Komori, Atsushi (1585) | Lost 1-2 | -201658 |
| 13legacy | 147 | Yamaguchi, Shouta (1601) | Lost 0-2 | -191639 |
| top | average opponent: 1628record: 8-5 | new rating: 1639 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1072 | Kikuchi, Takashi (1378) | Won 2-0 | +161506 |
| 2standard | 544 | Matsumoto, Tomohiro (1518) | Lost 1-2 | -181488 |
| 3standard | 951 | Conde-Gonzalez, Francisco Antonio (1530) | Draw 1-1 | +11489 |
| 4standard | 1058 | Kawamura, Masayoshi (1498) | Won 2-0 | +181507 |
| 5standard | 742 | Choi, Kiho (1438) | Won 2-1 | +171524 |
| 6standard | 472 | Yamade, Masato (1526) | Draw 1-1 | 01524 |
| 7standard | 695 | Sawada, Kazuki (1560) | Won 2-0 | +191543 |
| 8standard | 467 | Yoshida, Shunsuke (1559) | Won 2-1 | +181561 |
| 9standard | 299 | Tsuji, Naoto (1559) | Won 2-0 | +181579 |
| 10standard | 186 | Sato, Hikaru (Fukushima) (1588) | Won 2-1 | +181597 |
| 11standard | 117 | Ishii, Wataru (1563) | Lost 1-2 | -181579 |
| 12standard | 215 | Bestard, Kat (1617) | Won 2-0 | +181597 |
| 13standard | 138 | Wada, Yuki (1826) | Lost 1-2 | -141583 |
| 14standard | 212 | Soh, Weng Heng (1840) | Won 2-1 | +231606 |
| 15standard | 150 | Jitsukawa, Naofumi (1690) | Lost 0-2 | -171589 |
| top | average opponent: 1579record: 9-4-2 | new rating: 1589 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 61 | Watanabe, Masayoshi (1578) | Lost 0-2 | -171473 |
| 2legacy | 243 | Ejiri, Naoyuki (1483) | Draw 1-1 | +11474 |
| 3legacy | 406 | Saito, Hajime (1528) | Won 2-1 | +191493 |
| 4legacy | 308 | Kaneda, Yuuji (1482) | Draw 1-1 | -11492 |
| 5legacy | 360 | Ooba, Hideto (1454) | Won 2-1 | +181510 |
| 6legacy | 276 | Yoshimura, Naoki (1475) | Draw 1-1 | -11509 |
| 7legacy | 266 | Fuentebella, Jed (1462) | Lost 0-2 | -191490 |
| top | average opponent: 1494record: 2-2-3 | new rating: 1490 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 192 | Kamimori, Masahiro (1500) | Lost 0-2 | -181493 |
| 2modern | 342 | Ikarashi, Kou (1462) | Won 2-0 | +181511 |
| 3modern | 254 | Terazaki, Junichi (1499) | Won 2-0 | +171528 |
| 4modern | 226 | Sakurai, Koki (1504) | Lost 0-2 | -181510 |
| 5modern | 415 | Tsujioka, Takeo (1451) | Won 2-1 | +171527 |
| 6modern | 223 | Miyagi, Moto (1494) | Lost 0-2 | -191508 |
| 7modern | 303 | Hayashibara, Kazuki (1483) | Lost 1-2 | -181490 |
| top | average opponent: 1485record: 3-4 | new rating: 1490 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 365 | Iimura, Taka (1500) | Lost 1-2 | -181478 |
| 2modern | 465 | Irie, Daiki (1482) | Lost 0-2 | -181460 |
| 3modern | 621 | Kawasaki, Shinsuke (1463) | Won 2-0 | +181478 |
| 4modern | 661 | Ida, Takamasa (1414) | Won 2-1 | +171495 |
| 5modern | 442 | Kanehira, Haruki (1417) | Lost 0-2 | -191476 |
| 6modern | 530 | Motoki, Takahiro (1465) | Won 2-0 | +171493 |
| 7modern | 365 | Adachi, Ryosuke (1341) | Won 2-0 | +161509 |
| 8modern | 309 | Inui, Takashi (1502) | Lost 1-2 | -191490 |
| 9modern | 232 | Ishida, Hiroshi (1652) | Won 2-0 | +211511 |
| top | average opponent: 1471record: 5-4 | new rating: 1511 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 68 | Yoshida, Mitsutaka (1216) | Won 2-0 | +131513 |
| 2standard | 116 | Shimanuki, Kyohei (1517) | Won 2-0 | +181531 |
| 3standard | 52 | Kumagai, Haruka (1573) | Won 2-0 | +191550 |
| 4standard | 31 | Hasegawa, Gaku (1588) | Lost 1-2 | -171533 |
| 5standard | 124 | Takahashi, Keiji (1503) | Lost 1-2 | -191514 |
| 6standard | 159 | Kojima, Tatsuhiro (1512) | Lost 0-2 | -181496 |
| top | average opponent: 1485record: 3-3 | new rating: 1496 | ||