Katou, Masaya
Current rating: 1614
Record: 54-53-2
- 2009
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1578 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 98 | Ichikawa, Tatsuya 3238 (1557) | Won 2-1 | +181596 |
| 2pioneer | 144 | Karasawa, Ryuichi (1821) | Lost 0-2 | -141582 |
| 3pioneer | 486 | Oono, Masahiro (1453) | Won 2-0 | +151597 |
| 4pioneer | 395 | Yokokawa, Yuta (1428) | Lost 1-2 | -211576 |
| 5pioneer | 463 | Nakanishi, Toma (1546) | Won 2-0 | +181594 |
| 6pioneer | 475 | Matsushita, Yuusuke (1533) | Won 2-1 | +171611 |
| 7pioneer | 165 | Matsumura, Toshikazu (1595) | Won 2-0 | +171628 |
| 8pioneer | 215 | Miura, Ryuji (1843) | Lost 0-2 | -141614 |
| top | average opponent: 1597record: 5-3 | new rating: 1614 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 316 | Ebisujima, Isao (1512) | Won 2-0 | +181547 |
| 2standard | 222 | Matsuzaki, Eiji (1477) | Won 2-1 | +171564 |
| 3standard | 35 | Omi, Tatsuya (1581) | Lost 1-2 | -181546 |
| 4standard | 349 | Ikeda, Masahito (1526) | Draw 1-1 | 01546 |
| 5standard | 436 | Foo, Zhi Jie (1520) | Lost 1-2 | -191527 |
| 6standard | 563 | Murakami, Haruki (1502) | Won 2-1 | +181545 |
| 7standard | 409 | Hasegawa, Tsukasa (1444) | Won 2-1 | +161561 |
| 8standard | 288 | Oshiro, Marei (1507) | Won 2-0 | +171578 |
| top | average opponent: 1508record: 5-2-1 | new rating: 1578 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1564 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 391 | Hamano, Kouhei (1632) | Won 2-0 | +191583 |
| 2sealed | 378 | Sugimoto, Hiroaki (1609) | Lost 1-2 | -171566 |
| 3sealed | 761 | Yamasaki, Yudai (1667) | Lost 1-2 | -161550 |
| 4sealed | 947 | Asakawa, Shin'ichirou (1428) | Lost 1-2 | -211529 |
| top | average opponent: 1584record: 1-3 | new rating: 1529 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1592 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 676 | Tsuchihashi, Takuya (1773) | Lost 0-2 | -151577 |
| 2standard | 900 | Qiu, Qidi (1482) | Won 2-0 | +171594 |
| 3standard | 889 | Comley, Rainy (1449) | Won 2-0 | +151609 |
| 4standard | 699 | Yoshimoto, Ryuya (1485) | Lost 1-2 | -201589 |
| 5standard | 863 | Fujiwara, Mizuki (1471) | Lost 0-2 | -201569 |
| 6standard | 829 | Fujii, Takehiro (1503) | Lost 0-2 | -201549 |
| 7standard | 791 | Yoshikawa, Takuma (1473) | Draw 1-1 | -11548 |
| 8standard | 710 | Igagami, Hiroyuki (1444) | Won 2-1 | +161564 |
| top | average opponent: 1510record: 3-4-1 | new rating: 1564 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1556 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 412 | Ishizuka, Katsuya (1500) | Lost 0-2 | -191537 |
| 2legacy | 451 | Suzuki, Yusuke (1497) | Won 2-1 | +181555 |
| 3legacy | 508 | Wada, Yuuya (1486) | Lost 0-2 | -201535 |
| 4legacy | 627 | Nakano, Kouki (1480) | Won 2-1 | +171552 |
| 5legacy | 331 | Kanazawa, Ryo (1638) | Won 2-0 | +201572 |
| 6legacy | 265 | Taniguchi, Hiroaki (1850) | Won 2-0 | +231595 |
| 7legacy | 187 | Murakami, Takaaki (1508) | Won 2-0 | +161611 |
| 8legacy | 174 | Miki, Kenta (1546) | Lost 1-2 | -191592 |
| top | average opponent: 1563record: 5-3 | new rating: 1592 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 15 | Saito, Takaya (1919) | Won 2-0 | +261532 |
| 2sealed | 434 | Ichisugi, Shingo (1518) | Won 2-1 | +171549 |
| 3sealed | 192 | Sekimoto, Kandai (1805) | Lost 0-2 | -131536 |
| 4sealed | 741 | Hasegawa, Tatuya (1605) | Won 2-1 | +191555 |
| 5sealed | 481 | Nakai, Tomoki (1714) | Won 2-0 | +211576 |
| 6sealed | 201 | Soma, Kensuke (1490) | Lost 1-2 | -201556 |
| 7sealed | 307 | Kogure, Takamasa (1498) | Won 2-0 | +171573 |
| 8sealed | 353 | Fukuoka, Sou (1624) | Lost 0-2 | -171556 |
| top | average opponent: 1647record: 5-3 | new rating: 1556 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 417 | Tanaka, Masataka (1465) | Won 2-0 | +181497 |
| 2modern | 508 | Sakamoto, Jun (1629) | Won 2-0 | +201517 |
| 3modern | 12 | Lam, Joe (1835) | Lost 0-2 | -121505 |
| 4modern | 728 | Yamade, Masato (1560) | Won 2-1 | +191524 |
| 5modern | 419 | Uchida, Takahisa (1535) | Won 2-0 | +181542 |
| 6modern | 165 | Ito, Shinichi (1660) | Lost 1-2 | -161526 |
| 7modern | 486 | Satou, Kenji (1549) | Lost 0-2 | -171509 |
| 8modern | 575 | Igarashi, Hisashi (1452) | Won 2-0 | +171526 |
| 9modern | 410 | Marui, Yuki (1466) | Lost 1-2 | -201506 |
| top | average opponent: 1572record: 5-4 | new rating: 1506 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1342 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 661 | Itatsu, Hiroki (1500) | Lost 1-2 | -151327 |
| 2standard | 834 | Matsumoto, Naoki (1447) | Won 2-0 | +201347 |
| 3standard | 1077 | Morita, Kazuki (1407) | Won 2-0 | +191366 |
| 4standard | 686 | Satou, Takahisa (1516) | Won 2-0 | +211387 |
| 5standard | 183 | Tsubouchi, Tomoya (1710) | Won 2-0 | +231410 |
| 6standard | 179 | Ishikawa, Shou (1647) | Lost 1-2 | -141396 |
| 7standard | 292 | Inoue, Yuusuke (1657) | Won 2-0 | +231419 |
| 8standard | 168 | Masuko, Daisuke (1546) | Won 2-1 | +201439 |
| 9standard | 128 | Igarashi, Junpei (1555) | Won 2-0 | +211460 |
| 10standard | 129 | Matubayashi, Kazunori (1718) | Won 2-0 | +221482 |
| 11standard | 35 | Hirami, Tomonori (1952) | Lost 0-2 | -101472 |
| 12standard | 162 | Iitsuka, Yuuki (1647) | Lost 0-2 | -151457 |
| 13standard | 233 | Tokairin, Taishi (1484) | Won 2-0 | +191476 |
| 14standard | 111 | Takahashi, Taro (1573) | Lost 0-2 | -161460 |
| 15standard | 198 | Katagiri, Keisuke (1545) | Won 2-0 | +191479 |
| top | average opponent: 1594record: 10-5 | new rating: 1479 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1389 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 976 | Goshima, Akito (1638) | Lost 1-2 | -141375 |
| 2standard | 1012 | Takeda, Yoshihide (1428) | Lost 0-2 | -171358 |
| 3standard | 1613 | Takase, Yuuichi (1427) | Lost 1-2 | -161342 |
| top | average opponent: 1498record: 0-3 | new rating: 1342 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1414 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 364 | Kaizu, Hareta (1774) | Lost 0-2 | -121402 |
| 2sealed | 704 | Kimbara, Shohei (1521) | Won 2-0 | +211423 |
| 3sealed | 796 | Nishihara, Hideyuki (1540) | Lost 0-2 | -161407 |
| 4sealed | 1072 | Koide, Yuichi (1424) | Lost 0-2 | -181389 |
| top | average opponent: 1565record: 1-3 | new rating: 1389 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 191 | Toshima, Shibuki (1500) | Lost 0-2 | -171409 |
| 2sealed | 445 | Shirai, Takahiro (1465) | Lost 0-2 | -171392 |
| 3sealed | 568 | Matumura, Akihiro (1482) | Won 2-0 | +201412 |
| 4sealed | 393 | Shibata, Toru (1480) | Won 2-0 | +191431 |
| 5sealed | 338 | Oishi, Go (1499) | Lost 1-2 | -171414 |
| top | average opponent: 1485record: 2-3 | new rating: 1414 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 649 | Fujita, Toshihide (1500) | Lost 1-2 | -171422 |
| 2legacy | 774 | Yamasita, Akira (1449) | Won 2-0 | +191441 |
| 3legacy | 870 | Morishita, Yoshihisa (1570) | Lost 0-2 | -161425 |
| 4legacy | 838 | Shinoda, Isana (1497) | Won 2-1 | +201445 |
| 5legacy | 730 | Nagae, Yasuji (1334) | Lost 0-2 | -201425 |
| 6legacy | 842 | Kagoi, Yuki (1428) | Won 2-0 | +181443 |
| 7legacy | 760 | Soejima, Naoki (1496) | Lost 0-2 | -171426 |
| top | average opponent: 1468record: 3-4 | new rating: 1426 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 26 | Kurihara, Satoshi (1500) | Won 2-0 | +191473 |
| 2sealed | 48 | Suzuki, Yuuji (1608) | Lost 1-2 | -151458 |
| 3sealed | 370 | Kunioka, Ryota (1442) | Lost 1-2 | -191439 |
| top | average opponent: 1517record: 1-2 | new rating: 1439 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 783 | Yau, Winnie (1500) | Lost 0-2 | -171435 |
| 2sealed | 782 | Noguchi, Shun (1530) | Lost 1-2 | -161419 |
| 3sealed | 873 | Maki, Kazushi (1486) | Won 2-0 | +191438 |
| 4sealed | 833 | Kelterbaum, Catherine (1349) | Won 2-1 | +161454 |
| top | average opponent: 1466record: 2-2 | new rating: 1454 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 110 | Nomoto, Hidetaka (1482) | Lost 0-2 | -181470 |
| 2standard | 316 | Okazaki, Atsushi (1482) | Lost 1-2 | -181452 |
| 3standard | 374 | Kojima, Kazuteru (1464) | Lost 1-2 | -181434 |
| 4standard | 408 | Ishikawa, Takuma (1442) | Won 2-0 | +181452 |
| 5standard | 356 | Mori, Syuuichi (1446) | Won 2-0 | +181470 |
| 6standard | 296 | Fusegi, Takanori (1467) | Lost 0-2 | -181452 |
| top | average opponent: 1464record: 2-4 | new rating: 1452 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 481 | Minakata, Satoshi (1500) | Won 2-1 | +181525 |
| 2standard | 307 | Hamaguchi, Masakuni (1500) | Lost 1-2 | -191506 |
| 3standard | 490 | Oosawa, Syo (1501) | Won 2-0 | +181524 |
| 4standard | 291 | Ueyama, Yudai (1592) | Lost 1-2 | -171507 |
| 5standard | 415 | Sakakuchi, Takashi (1420) | Lost 0-2 | -191488 |
| top | average opponent: 1503record: 2-3 | new rating: 1488 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 138 | Takahira, Wataru (1413) | Won 2-0 | +161516 |
| 2sealed | 100 | Kurashima, Masashi (1519) | Won 2-1 | +181534 |
| 3sealed | 60 | Ueda, Katsuya (1825) | Lost 0-2 | -121522 |
| 4sealed | 95 | Yokoi, Masaki (1702) | Lost 0-2 | -151507 |
| top | average opponent: 1614record: 2-2 | new rating: 1507 | ||