Izumi, Masaru
Current rating: 1621
Record: 41-35 (GP) / 4-4 (professional)
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1677 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 249 | Kariya, Kazuki (1735) | Lost 0-2 | -171660 |
| 3legacy | 539 | Toyota, Shimpei (1690) | Lost 1-2 | -171643 |
| 4legacy | 511 | Kimura, Takuya (1448) | Lost 1-2 | -221621 |
| top | average opponent: 1624record: 0-3 | new rating: 1621 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1575 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 608 | Ogawa, Toshiyuki (1519) | Won 2-0 | +171592 |
| 2legacy | 133 | Shibayama, Hayato (1354) | Won 2-1 | +141606 |
| 3legacy | 554 | Bandou, Junichirou (1768) | Won 2-1 | +211627 |
| 4legacy | 106 | Kobayashi, Akihiro (1504) | Lost 1-2 | -201607 |
| 5legacy | 516 | Yokumichi, Jun (1496) | Lost 1-2 | -201587 |
| 6legacy | 701 | Ikegami, Hiroshi (1519) | Won 2-1 | +161603 |
| 7legacy | 448 | Miki, Takashi (1513) | Lost 1-2 | -191584 |
| 8legacy | 635 | Kogure, Takamasa (1477) | Won 2-0 | +161600 |
| 9legacy | 377 | Tanaka, Kosuke (1506) | Won 2-0 | +161616 |
| 10legacy | 291 | Yashiki, Kouichi (1388) | Won 2-0 | +141630 |
| 11legacy | 138 | Shiraishi, Ginga (1492) | Lost 0-2 | -211609 |
| 12legacy | 199 | Hirosawa, Yuuichirou (1560) | Won 2-1 | +181627 |
| 13legacy | 179 | Takano, Kodai (1537) | Won 2-0 | +161643 |
| 14legacy | 113 | Ge, Jing (1578) | Won 2-1 | +171660 |
| 15legacy | 113 | Sato, Ryohei2439 (1631) | Won 2-1 | +171677 |
| top | average opponent: 1523record: 11-4 | new rating: 1677 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 752 | Maki, Akira (1500) | Lost 1-2 | -191506 |
| 2legacy | 771 | Yanagawa, Hideyuki (1452) | Won 2-0 | +171523 |
| 3legacy | 831 | Kumagai, Hitoshi (1535) | Won 2-1 | +181541 |
| 4legacy | 639 | Takamine, Hiroyuki (1519) | Won 2-0 | +181559 |
| 5legacy | 702 | Goto, Yuki (1536) | Lost 0-2 | -181541 |
| 6legacy | 655 | Hasebe, Seiya (1515) | Won 2-1 | +171558 |
| 7legacy | 606 | Ogura, Syunichi (1539) | Won 2-1 | +181576 |
| 8legacy | 563 | Kobayashi, Satoshi (1537) | Lost 0-2 | -191557 |
| 9legacy | 642 | Kadono, Takayuki (1560) | Won 2-0 | +181575 |
| top | average opponent: 1521record: 6-3 | new rating: 1575 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 38 | Serizawa, Yuuki (1518) | Won 2-0 | +171559 |
| 3extended | 90 | Kobayashi, Hiroki (1577) | Won 2-0 | +191578 |
| 4extended | 20 | Fujita, Tsuyoshi (1620) | Lost 0-2 | -181560 |
| 5extended | 134 | Osumi, Keigo (1524) | Lost 1-2 | -181542 |
| 6extended | 163 | Yasuda, Masayuki (1594) | Lost 0-2 | -171525 |
| top | average opponent: 1567record: 2-3 | new rating: 1525 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 63 | Takahashi, Keisuke (1520) | Won 2-1 | +181556 |
| 3sealed | 18 | Takao, Akinao (1671) | Lost 0-2 | -161540 |
| 4sealed | 140 | Kikuchi, Taiki (1520) | Lost 0-2 | -191521 |
| 5sealed | 217 | Takebayashi, Tomo (1593) | Lost 0-2 | -161505 |
| 6sealed | 202 | Tezuka, Yuuki (1444) | Won 2-1 | +171522 |
| 7sealed | 154 | Kubo, Ryoutarou (1510) | Won 2-1 | +171539 |
| 8sealed | 128 | Yoshikawa, Yuta (1551) | Won 2-1 | +191558 |
| 9sealed | 81 | Ishii, Taisuke (1676) | Lost 0-2 | -161542 |
| top | average opponent: 1561record: 4-4 | new rating: 1542 | ||
| Pro Tour Honolulu 2009 (Alara block) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 86 | Perdue, Justin (1559) | Lost 1-2 | -181514 |
| 2block | 131 | Bauer, Karim (1591) | Lost 1-2 | -161498 |
| 3block | 189 | Horden, Stuart (1523) | Won 2-1 | +181516 |
| 4block | 173 | Alepin, Alexandre (1663) | Lost 1-2 | -151501 |
| 5block | 169 | Dumanski, Drew (1474) | Won 2-0 | +171518 |
| 6draft | 131 | Deidda, Alessandro (1500) | Won 2-0 | +181536 |
| 7draft | 94 | Bishop, James M (1503) | Won 2-0 | +181554 |
| 8draft | 92 | Cordell, Robbie (1686) | Lost 1-2 | -161538 |
| top | average opponent: 1563record: 4-4 | new rating: 1538 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 182 | Tsukamoto, Tatsushi (1542) | Lost 0-2 | -171508 |
| 3block | 219 | Nishino, Wataru (1500) | Won 2-1 | +181526 |
| 4block | 190 | Yamamoto, Keiichi (1467) | Won 2-0 | +171543 |
| 5block | 122 | Yanagi, Hiroki (1711) | Lost 0-2 | -151528 |
| 6block | 218 | Fukui, Shunsuke (1517) | Won 2-0 | +171545 |
| 7block | 156 | Masuno, Ryosuke (1796) | Lost 1-2 | -131532 |
| top | average opponent: 1589record: 3-3 | new rating: 1532 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 253 | Shibasaki, Yoshihiro (1509) | Won 2-0 | +181476 |
| 2standard | 131 | Kodama, Hironori (1494) | Won 2-1 | +191495 |
| 3standard | 18 | Mori, Koutarou (1452) | Won 2-0 | +171512 |
| 4standard | 42 | Sato, Takatoshi (1585) | Lost 1-2 | -171495 |
| 5standard | 117 | Ota, Keisuke (1586) | Lost 0-2 | -161479 |
| 6standard | 150 | Nishimoto, Takuya (1464) | Won 2-0 | +181497 |
| 7standard | 57 | Motomura, Shigeru (1579) | Won 2-1 | +191516 |
| 8standard | 13 | Kudou, Takuya (1558) | Won 2-1 | +191535 |
| 9standard | 134 | Eura, Hiroki (1616) | ID | 01535 |
| 10standard | 39 | Ohige, Tatsuya (1548) | Lost 0-2 | -181517 |
| 11standard | 54 | Orihara, Ryu (1574) | Lost 0-2 | -171500 |
| 12standard | 35 | Ushikubo, Kenichi (1516) | Won 2-0 | +191519 |
| 13standard | 53 | Wakayama, Shiro (1582) | Won 2-0 | +191538 |
| 14standard | 13 | Watanabe, Yuuya (1815) | Lost 0-2 | -131525 |
| 15standard | 42 | Gotou, Hiroaki (1557) | Lost 1-2 | -181507 |
| 16standard | 26 | Sugimoto, Hiroaki (1523) | Won 2-0 | +181525 |
| top | average opponent: 1560record: 9-6-1 | new rating: 1525 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 258 | Hirata, Minoru (1551) | Lost 1-2 | -161430 |
| 2standard | 272 | Kitaoka, Takaaki (1475) | Won 2-0 | +181448 |
| 3standard | 226 | Tsuboi, Shuu (1499) | Won 2-1 | +191467 |
| 4standard | 139 | Kubouchi, Naoki (1661) | Won 2-1 | +221489 |
| 5standard | 125 | Honnami, Tomoyuki (1624) | Lost 0-2 | -161473 |
| 6standard | 157 | Wada, Yuki (1594) | Lost 0-2 | -151458 |
| top | average opponent: 1568record: 3-3 | new rating: 1458 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 200 | Kaneshige, Kozo (1500) | Won 2-0 | +181518 |
| 2block | 56 | Takabatake, Takayuki (1553) | Lost 0-2 | -171501 |
| 3block | 284 | Fujiwara, Satoshi (1466) | Lost 1-2 | -191482 |
| 4block | 565 | Ueda, Sunao (1465) | Lost 1-2 | -181464 |
| 5block | 562 | Miura, Masaru (1464) | Lost 0-2 | -181446 |
| 6block | 482 | Fujishima, Hisaya (1446) | Won 2-0 | +181464 |
| 7block | 383 | Ohige, Tatsuya (1465) | Won 2-0 | +181482 |
| 8block | 303 | Imajuku, Katsuji (1480) | Lost 0-2 | -181464 |
| 9block | 228 | Komatsu, Hidekazu (1463) | Lost 0-2 | -181446 |
| top | average opponent: 1478record: 3-6 | new rating: 1446 | ||