Matsumoto, Kazuya
Current rating: 1587
Record: 37-33
| Grand Prix Yokohama 2019 (modern) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 291 | Kamishiro, Issey (1499) | Won 2-0 | +171559 |
| 3modern | 340 | Hirosawa, Yuki (1470) | Won 2-1 | +161575 |
| 4modern | 102 | Tanabe, Kyohei (1517) | Won 2-1 | +171592 |
| 5modern | 103 | Shiomi, Hirohisa (1594) | Lost 1-2 | -181574 |
| 6modern | 305 | Toriumi, Takashi (1502) | Won 2-0 | +171591 |
| 7modern | 81 | Tsushima, Kiyoto (1553) | Lost 0-2 | -191572 |
| 8modern | 312 | Yokota, Naoto (1612) | Won 2-0 | +191591 |
| 9modern | 130 | Popitukgul, Sutipong (1754) | Lost 0-2 | -151576 |
| 10modern | 174 | Endoh, Hiroki (1583) | Won 2-0 | +181594 |
| 11modern | 108 | Kumagai, Riku (2055) | Lost 0-2 | -101584 |
| 12modern | 153 | Kobayashi, Yuuki 0719 (1537) | Lost 1-2 | -191565 |
| 13modern | 190 | Tanaka, Yuuki (1502) | Won 2-1 | +171582 |
| 14modern | 171 | Liu, Xuan (1727) | Won 2-1 | +211603 |
| 15modern | 122 | Nakano, Tatsuhito (1732) | Lost 0-2 | -161587 |
| top | average opponent: 1617record: 8-6 | new rating: 1587 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 474 | Kano, Tomohiko (1500) | Won 2-0 | +181522 |
| 2legacy | 196 | Ichinohe, Hirona (1446) | Won 2-0 | +171539 |
| 3legacy | 152 | Yoshimura, Wataru (1450) | Won 2-0 | +161555 |
| 4legacy | 144 | Jung, Ga Ram (1666) | Lost 0-2 | -161539 |
| 5legacy | 156 | Tanzawa, Masanori (1540) | Won 2-0 | +181557 |
| 6legacy | 94 | Nakamura, Yuki 8131 (1727) | Lost 1-2 | -151542 |
| 7legacy | 203 | Nakagawa, Tango (1537) | Lost 0-2 | -181524 |
| 8legacy | 249 | Morishita, Takamitu (1515) | Won 2-0 | +181542 |
| top | average opponent: 1548record: 5-3 | new rating: 1542 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 208 | Yamagata, Hiroki (1557) | Lost 0-2 | -191552 |
| 4modern | 416 | Hayashi, Shingo (1520) | Won 2-1 | +181570 |
| 5modern | 401 | Mihara, Makihito (1971) | Lost 0-2 | -111559 |
| 6modern | 699 | Karasawa, Ryuichi (1615) | Lost 1-2 | -171542 |
| 7modern | 773 | Tokuyama, Koki (1467) | Lost 1-2 | -201522 |
| 8modern | 884 | Kamei, Toshio (1500) | Lost 1-2 | -181504 |
| top | average opponent: 1605record: 1-5 | new rating: 1504 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 746 | Tanaka, Hironao (1542) | Won 2-1 | +181553 |
| 2modern | 834 | Terawaki, Koji (1536) | Won 2-1 | +181571 |
| 3modern | 775 | Nanjo, Masashi (1706) | Won 2-1 | +211592 |
| 4modern | 718 | Kagotani, Naota (1453) | Won 2-1 | +151607 |
| 5modern | 712 | Tsumura, Kenji (1716) | Lost 0-2 | -161591 |
| 6modern | 795 | Aikawa, Tomoyuki (1542) | Lost 0-2 | -191572 |
| 7modern | 914 | Takahashi, Yuto (1519) | Won 2-1 | +171589 |
| 8modern | 842 | Fujiwara, Ryuki (1563) | Lost 1-2 | -181571 |
| top | average opponent: 1572record: 5-3 | new rating: 1571 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 120 | Nakamura, Takuya (1483) | Won 2-0 | +171557 |
| 2modern | 59 | Yoshida, Yuuji (1610) | Lost 0-2 | -171540 |
| 3modern | 429 | Yamauchi, Shotaro (1441) | Lost 0-2 | -201520 |
| 4modern | 582 | Yokozawa, Naoya (1487) | Won 2-0 | +171537 |
| 5modern | 537 | Tabata, Kenichirou (1453) | Won 2-1 | +171554 |
| 6modern | 318 | Okajima, Masahiro (1518) | Lost 0-2 | -191535 |
| top | average opponent: 1499record: 3-3 | new rating: 1535 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 326 | Horie, Isamu (1505) | Won 2-1 | +171556 |
| 2extended | 251 | Sugimoto, Hiroaki (1471) | Won 2-1 | +171573 |
| 3extended | 101 | Takebayashi, Tomo (1657) | Lost 0-2 | -171556 |
| 4extended | 182 | Furuya, Yuuki (1558) | Won 2-0 | +181574 |
| 5extended | 115 | Yotsumoto, Yuki (1685) | Lost 1-2 | -161558 |
| 6extended | 156 | Ohnishi, Jyunpei (1534) | Lost 1-2 | -181540 |
| top | average opponent: 1568record: 3-3 | new rating: 1540 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 279 | kou, siki (1500) | Won 0-0 | +161575 |
| 2sealed | 65 | Mayaguchi, Masaru (1561) | Won 2-1 | +181593 |
| 3sealed | 65 | Kubouchi, Naoki (1645) | Lost 0-2 | -171576 |
| 4sealed | 155 | Machida, Takatoshi (1449) | Lost 0-2 | -201556 |
| 5sealed | 211 | Tanaka, Atsushi (1620) | Lost 0-2 | -171539 |
| top | average opponent: 1555record: 2-3 | new rating: 1539 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 130 | Kakehi, Takuma (1450) | Won 2-1 | +171519 |
| 2block | 172 | Kobayashi, Asuki (1517) | Won 2-0 | +181537 |
| 3block | 115 | Takeno, Shinichi (1536) | Lost 1-2 | -181519 |
| 4block | 122 | Suzuki, Shoichi (1593) | Lost 1-2 | -171502 |
| 5block | 261 | Kimura, Naoyuki (1412) | Won 2-1 | +161518 |
| 6block | 177 | Kageyama, Kiyotomo (1664) | Won 2-1 | +211539 |
| 7block | 81 | Nakao, Munenari (1559) | Won 2-1 | +181557 |
| 8block | 95 | Nitobe, Takayuki (1570) | Won 2-1 | +191576 |
| 9block | 42 | Takeda, Hiroki (1630) | Lost 0-2 | -171559 |
| top | average opponent: 1548record: 6-3 | new rating: 1559 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 262 | Honda, Atsuo (1521) | Lost 1-2 | -181482 |
| 2standard | 304 | Moriyama, Masahiro (1420) | Won 2-0 | +171499 |
| 3standard | 274 | Asai, Ryuusuke (1609) | Won 2-0 | +201519 |
| 4standard | 106 | Furukawa, Hiroki (1485) | Lost 0-2 | -181501 |
| 5standard | 267 | Arahori, Kazuaki (1615) | Lost 1-2 | -161485 |
| 6standard | 268 | Matsuo, Keita (1481) | Won 2-1 | +181503 |
| 7standard | 51 | Kuribayashi, Tatsunori (1478) | Lost 0-2 | -191484 |
| 8standard | 15 | Ichikawa, Yasura (1452) | Won 2-1 | +181502 |
| top | average opponent: 1508record: 4-4 | new rating: 1502 | ||