Masumoto, Kazuhiro
Current rating: 1606
Record: 49-43-2
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 6 | Tsuchiya, Ryuichi (1493) | Won 2-1 | +171560 |
| 3pioneer | 293 | Takao, Naoki (1635) | Lost 0-2 | -171543 |
| 4pioneer | 449 | Tanaka, Yoshihiro (1477) | Won 2-0 | +171560 |
| 5pioneer | 279 | Yamada, Akinori (1587) | Won 2-0 | +191579 |
| 6pioneer | 176 | Shigemura, Yuji (1612) | Won 2-1 | +181597 |
| 7pioneer | 50 | Koshiishi, Tadahito (1621) | Won 2-0 | +191616 |
| 8pioneer | 53 | Kitagawa, Yusuke (1591) | Won 2-1 | +171633 |
| 9pioneer | 42 | Shiota, Fumihiko (1951) | Lost 1-2 | -121621 |
| 10pioneer | 39 | Kurita, Yudai (1708) | Won 2-1 | +191640 |
| 11pioneer | 54 | Miyake, Toru (1522) | Lost 1-2 | -201620 |
| 12pioneer | 97 | Furuta, Masayuki (1495) | Won 2-0 | +161636 |
| 13pioneer | 69 | Miyagi, Moto (1806) | Lost 1-2 | -151621 |
| 14pioneer | 80 | Aoki, Yoshitsugu (1789) | Lost 1-2 | -151606 |
| top | average opponent: 1637record: 8-5 | new rating: 1606 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 213 | Takada, Narumasa (1488) | Lost 0-2 | -181500 |
| 3standard | 571 | Tanabe, Takumi (1575) | Won 2-0 | +191519 |
| 4standard | 376 | Suzuki, Masahiro 5436 (1695) | Won 2-0 | +211540 |
| 5standard | 245 | Suzuki, Takuya 1104 (1490) | Won 2-0 | +171557 |
| 6standard | 186 | Ishigaki, Rikiya (1541) | Won 2-0 | +181575 |
| 7standard | 81 | Hayakawa, Sho (1643) | Lost 1-2 | -171558 |
| 8standard | 118 | Urasawa, Taiji (1698) | Lost 1-2 | -151543 |
| top | average opponent: 1590record: 4-3 | new rating: 1543 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 3 | Tei, Shinri (1635) | Lost 1-2 | -161521 |
| 3sealed | 869 | Nakayama, Munetoshi (1406) | Lost 1-2 | -201501 |
| 4sealed | 896 | Ando, Koyo (1533) | Won 2-0 | +181519 |
| 5sealed | 796 | Udagawa, Yuuya (1505) | Won 2-0 | +181537 |
| 6sealed | 605 | Takagi, Yuma (1623) | Lost 0-2 | -161521 |
| 7sealed | 144 | Morishita, Yoshihisa (1391) | Won 2-1 | +151536 |
| 8sealed | 455 | Saito, Shosuke (1546) | Lost 0-2 | -181518 |
| top | average opponent: 1520record: 3-4 | new rating: 1518 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 269 | Kato, Kazuyuki (1327) | Won 2-0 | +141536 |
| 2standard | 125 | Matsubara, Akifumi (1467) | Won 2-1 | +171553 |
| 3standard | 198 | Locsin, John Gilbert (1605) | Won 2-1 | +191572 |
| 4standard | 61 | Seunbane, Lomsavath (1438) | Lost 1-2 | -201552 |
| 5standard | 240 | Takahashi, Jun (1812) | Lost 0-2 | -141538 |
| 6standard | 544 | Huruta, Kouta (1515) | Won 2-1 | +181556 |
| 7standard | 328 | Noji, Koichiro (1499) | Lost 0-2 | -191537 |
| top | average opponent: 1523record: 4-3 | new rating: 1537 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 689 | Toyoda, Ryosuke (1415) | Lost 1-2 | -211537 |
| 2standard | 897 | Maciel, Julio (1585) | Won 2-1 | +191556 |
| 3standard | 974 | Nishida, Makoto (1615) | Lost 1-2 | -171539 |
| 4standard | 999 | Okajima, Masahiro (1586) | Lost 0-2 | -171522 |
| top | average opponent: 1550record: 1-3 | new rating: 1522 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 572 | Yamagata, Yutaro (1563) | Lost 0-2 | -171527 |
| 2sealed | 785 | Miyashita, Hiroaki (1482) | Won 2-1 | +171544 |
| 3sealed | 643 | Itazu, Boram (1358) | Won 2-0 | +151559 |
| 4sealed | 565 | Akase, Daisuke (1601) | Won 2-0 | +181577 |
| 5sealed | 438 | Hirata, Tomoki (1502) | Lost 0-2 | -191558 |
| 6sealed | 540 | Matsuda, Kenji (1519) | Won 2-1 | +171575 |
| 7sealed | 455 | Fukuoka, Sou (1607) | Lost 1-2 | -171558 |
| top | average opponent: 1519record: 4-3 | new rating: 1558 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1567 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 426 | Mizuno, Masahito (1590) | Won 2-0 | +181585 |
| 2sealed | 212 | Omuta, Shoya (1511) | Lost 0-2 | -191566 |
| 3sealed | 760 | Miyazaki, Toshiyuki (1498) | Won 2-0 | +171583 |
| 4sealed | 395 | Kyutoku, Ryuichi (1517) | Lost 1-2 | -191564 |
| 5sealed | 870 | Hagi, Shogo (1494) | Lost 0-2 | -201544 |
| top | average opponent: 1522record: 2-3 | new rating: 1544 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 354 | Hayashi, Masashi (1493) | Won 2-0 | +161612 |
| 2standard | 152 | Ikeda, Masahito (1486) | Lost 1-2 | -201592 |
| 3standard | 790 | Horie, Hiroshi (1498) | Lost 0-2 | -201572 |
| 4standard | 1013 | Furuuchi, Yusuke (1439) | Won 2-0 | +151587 |
| 5standard | 923 | Kawaguchi, Akira (1452) | Lost 0-2 | -201567 |
| top | average opponent: 1474record: 2-3 | new rating: 1567 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1624 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 438 | Shimamura, Yukihiro (1594) | Lost 0-2 | -191605 |
| 4legacy | 427 | Ito, Kensuke (1467) | Draw 1-1 | -31602 |
| 5legacy | 546 | Fujimoto, Takashi (1384) | Won 2-0 | +151617 |
| 6legacy | 347 | Sugioka, Noriyuki (1540) | Draw 1-1 | -21615 |
| 7legacy | 534 | Oguri, Kouhei (1535) | Lost 1-2 | -191596 |
| top | average opponent: 1504record: 1-2-2 | new rating: 1596 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 153 | Goto, Takashi (1468) | Lost 0-2 | -191515 |
| 2standard | 839 | Ehara, Daisuke (1396) | Won 2-0 | +151530 |
| 3standard | 1004 | Tooi, Yuuta (1498) | Won 2-1 | +181548 |
| 4standard | 1037 | Oka, Yosuke (1514) | Won 2-1 | +171565 |
| 5standard | 390 | Oiso, Kenji (1740) | Won 2-1 | +211586 |
| 6standard | 114 | Katou, Yuusuke (1505) | Won 2-1 | +171603 |
| 7standard | 97 | Okumura, Noriaki (1663) | Lost 0-2 | -171586 |
| 8standard | 257 | Matsumura, Takehiko (1600) | Won 2-0 | +181604 |
| 9standard | 181 | Satou, Masanori (1599) | Lost 0-2 | -181586 |
| 10standard | 444 | Ishida, Shoichi (1530) | Won 2-1 | +171603 |
| 11standard | 313 | Sasaki, Takayuki (1735) | Won 2-0 | +201623 |
| 12standard | 156 | Shimizu, Syouta (1603) | Lost 1-2 | -181605 |
| 13standard | 238 | Saijo, Yuichi (1606) | Won 2-0 | +181623 |
| 14standard | 177 | Takahashi, Naoya (1731) | Won 2-0 | +201643 |
| 15standard | 133 | Choi, Jae-Joon (1557) | Lost 0-2 | -191624 |
| top | average opponent: 1583record: 10-5 | new rating: 1624 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1576 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 197 | Yuta, Inaoka (1451) | Lost 0-2 | -211555 |
| 2sealed | 807 | Saito, Ryoichiro (1548) | Won 2-1 | +181573 |
| 3sealed | 715 | Matsumoto, Ryousuke (1439) | Lost 0-2 | -201553 |
| 4sealed | 1070 | Martin, Maxime (1501) | Lost 0-2 | -191534 |
| top | average opponent: 1485record: 1-3 | new rating: 1534 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 666 | Itazu, Boram (1484) | Won 2-0 | +181518 |
| 2standard | 373 | Shiraki, Kento (1517) | Won 2-0 | +181536 |
| 3standard | 10 | Gotou, Hiroaki (1708) | Won 2-1 | +211557 |
| 4standard | 112 | Oikawa, Masafumi (1478) | Won 2-1 | +161573 |
| 5standard | 110 | Tuda, Yoshiyuki (1521) | Won 2-0 | +171590 |
| 6standard | 51 | Tanaka, Eiji (1635) | Won 2-1 | +191609 |
| 7standard | 24 | Hasegawa, Yu (1721) | Lost 1-2 | -161593 |
| 8standard | 74 | Cortese, Alessandro (1631) | Won 2-0 | +191612 |
| 9standard | 45 | Takahashi, Zen (1883) | Lost 0-2 | -131599 |
| 10standard | 145 | Uehara, Shinya (1567) | Won 2-0 | +171616 |
| 11standard | 66 | Matsuda, Yuuichirou (1568) | Lost 1-2 | -191597 |
| 12standard | 73 | Sakaguchi, Taiti (1598) | Won 2-1 | +181615 |
| 13standard | 61 | Yukuhiro, Ken (1922) | Lost 1-2 | -121603 |
| 14standard | 70 | Saito, Tomoharu (2140) | Lost 0-2 | -91594 |
| 15standard | 105 | Terada, Tadashi (1583) | Lost 0-2 | -181576 |
| top | average opponent: 1664record: 9-6 | new rating: 1576 | ||