Hamamoto, Yohei
Current rating: 1478
Record: 48-52-5
| Grand Prix Chiba 2016 (legacy) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 514 | Goubara, Tetsuya (1488) | Won 2-0 | +191470 |
| 2legacy | 69 | Murakami, Takaaki (1518) | Lost 0-2 | -171453 |
| 3legacy | 755 | Suzuki, Taito (1450) | Won 2-0 | +181471 |
| 4legacy | 328 | Umeda, Soichiro (1488) | Won 2-0 | +181489 |
| 5legacy | 167 | Furuichi, Takenori (1556) | Lost 0-2 | -171472 |
| 6legacy | 601 | Kamidani, Takehiro (1516) | Lost 1-2 | -171455 |
| 7legacy | 743 | Nagae, Shuhei (1489) | Won 2-1 | +191474 |
| 8legacy | 615 | Nakajima, Hiroki (1356) | Won 2-0 | +161490 |
| 9legacy | 306 | Nagaya, Souseki (1530) | Won 2-0 | +181508 |
| 10legacy | 225 | Hamada, Yuki (1531) | Lost 1-2 | -171491 |
| 11legacy | 290 | Nakamura, Masashi (1504) | Won 2-1 | +181509 |
| 12legacy | 203 | Takenaka, Takumi (1609) | Lost 1-2 | -161493 |
| 13legacy | 277 | Matsuda, Kenji (1506) | Lost 0-2 | -181475 |
| 14legacy | 258 | Miura, Kohei (1518) | Won 2-0 | +191494 |
| 15legacy | 255 | Schiber, Christopher (1606) | Lost 1-2 | -161478 |
| top | average opponent: 1511record: 8-7 | new rating: 1478 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 792 | Fukumoto, Syuuma (1500) | Won 2-0 | +181518 |
| 2sealed | 438 | Mitsui, Hideo (1684) | Won 2-0 | +211539 |
| 3sealed | 288 | Okamura, Takumi (1536) | Lost 1-2 | -181521 |
| 4sealed | 673 | Matsumoto, Kazuma (1568) | Lost 1-2 | -171504 |
| 5sealed | 859 | Kimura, Satoshi (1554) | Lost 0-2 | -171487 |
| 6sealed | 937 | Satoshi, Oono (1486) | Lost 1-2 | -181469 |
| 7sealed | 895 | Aizawa, Seiji (1365) | Lost 1-2 | -201449 |
| 8sealed | 809 | Hoshina, Ryousuke (1520) | Won 2-1 | +191468 |
| 9sealed | 672 | Hayashi, Masashi (1521) | Lost 1-2 | -171451 |
| top | average opponent: 1526record: 3-6 | new rating: 1451 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 459 | Maruno, Takaaki (1519) | Lost 1-2 | -171462 |
| 2standard | 872 | Ogura, Takamasa5329 (1428) | Won 2-1 | +171479 |
| 3standard | 952 | Hanano, Tetsuaki (1398) | Won 2-0 | +171496 |
| 4standard | 381 | Kumagai, Masahiro (1521) | Lost 0-2 | -181478 |
| 5standard | 891 | Kanno, Shutaroh (1406) | Draw 1-1 | -11477 |
| 6standard | 750 | Takahashi, Osamu (1462) | Lost 1-2 | -191458 |
| 7standard | 739 | Ochi, Keita (1494) | Won 2-0 | +191477 |
| 8standard | 570 | Yoshida, Kei (1571) | Draw 1-1 | +21479 |
| 9standard | 499 | Oda, Hideto (1666) | Won 2-0 | +211500 |
| top | average opponent: 1496record: 4-3-2 | new rating: 1500 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 293 | Yamada, Shuusuke (1571) | Won 2-1 | +211432 |
| 2sealed | 123 | Zhao, Jin (1540) | Won 2-0 | +201452 |
| 3sealed | 174 | Soeda, Kohei (1506) | Won 2-1 | +191471 |
| 4sealed | 111 | Matsumoto, Shou (1620) | Lost 1-2 | -161455 |
| 5sealed | 224 | Kawasaki, Shinsuke (1536) | Won 2-0 | +201475 |
| 6sealed | 143 | Kawasaki, Masatsugu (1472) | Won 2-1 | +181493 |
| 7sealed | 68 | Hibino, Yasutaka (1571) | Lost 0-2 | -171476 |
| 8sealed | 92 | Okuyama, Kouhei (1521) | Won 2-1 | +191495 |
| 9sealed | 59 | Suzuki, Yuuji (1604) | Lost 1-2 | -161479 |
| top | average opponent: 1549record: 6-3 | new rating: 1479 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 645 | Aida, Tomomu (1463) | Won 2-1 | +191466 |
| 2sealed | 820 | Kashiwagi, Yuki (1503) | Lost 0-2 | -181448 |
| 3sealed | 857 | Fukuta, Shingo (1694) | Lost 1-2 | -131435 |
| 4sealed | 962 | Kim, Jae Min (1482) | Won 2-0 | +191454 |
| 5sealed | 845 | Tamura, Ryo (1951) | Lost 0-2 | -101444 |
| 6sealed | 948 | Makuta, Eiji (1482) | Lost 1-2 | -171427 |
| 7sealed | 899 | Park, Hyun Woong (1431) | Won 2-0 | +181445 |
| 8sealed | 818 | Radil, Daniel (1461) | Lost 0-2 | -181427 |
| 9sealed | 802 | Takimoto, Yusuke (1524) | Lost 1-2 | -161411 |
| top | average opponent: 1555record: 3-6 | new rating: 1411 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 872 | Yamamoto, Yasutomo (1337) | Won 2-1 | +151521 |
| 2modern | 952 | Hourani, Rami Amer (1450) | Lost 1-2 | -191502 |
| 3modern | 957 | Nakamura, Kouki (1336) | Lost 1-2 | -211481 |
| 4modern | 1198 | Kawakami, Kazuto (1688) | Lost 0-2 | -141467 |
| 5modern | 1156 | Kobayashi, Masanori 1290 (1431) | Lost 0-2 | -191448 |
| 6modern | 1128 | Tashiro, Shuji (1441) | Lost 0-2 | -181430 |
| 7modern | 1057 | Mukouyama, Taichi (1375) | Won 2-0 | +171447 |
| 8modern | 989 | Ueda, Yuya (1444) | Won 2-1 | +181465 |
| 9modern | 923 | Kawamata, Kei (1481) | Lost 1-2 | -181447 |
| top | average opponent: 1443record: 3-6 | new rating: 1447 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 305 | Nakajima, Kenichirou (1484) | Lost 0-2 | -191526 |
| 2standard | 317 | Sato, Kouki (1570) | Lost 0-2 | -171509 |
| 3standard | 497 | Nakaizumi, Takuma (1463) | Won 2-0 | +171526 |
| 4standard | 511 | Kodama, Hironori (1516) | Lost 0-2 | -181508 |
| 5standard | 514 | Ogino, Takashi (1462) | Lost 1-2 | -191489 |
| 6standard | 455 | Gao, Jing Jian (1449) | Won 2-0 | +171506 |
| top | average opponent: 1491record: 2-4 | new rating: 1506 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 135 | Yokoyama, Takaya (1518) | Won 2-0 | +181550 |
| 3sealed | 121 | Chen, Vince (1479) | Won 2-0 | +171567 |
| 4sealed | 11 | Nakamoto, Kosuke (1522) | Draw 1-1 | -11566 |
| 5sealed | 65 | Sasaki, Tsuyoshi (1574) | Lost 0-2 | -181548 |
| 6sealed | 147 | Oikawa, Kurumi (1534) | Won 2-1 | +181566 |
| 7sealed | 89 | Itabashi, Ryo (1553) | Won 2-0 | +181584 |
| 8sealed | 188 | Kim, Min-soo 094 (1524) | Lost 1-2 | -201564 |
| 9sealed | 290 | Koshida, Takafumi (1503) | Lost 0-2 | -191545 |
| top | average opponent: 1526record: 4-3-1 | new rating: 1545 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1511 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 389 | Nishimoto, Takuya (1490) | Lost 0-2 | -181493 |
| 2standard | 617 | Inagaki, Ryosuke (1483) | Won 2-0 | +181511 |
| 3standard | 539 | Hasegawa, Takashi (1482) | Lost 0-2 | -191492 |
| 4standard | 586 | Iwazaki, Yuuta (1567) | Won 2-1 | +201512 |
| 5standard | 533 | Kawahara, Masanobu (1476) | Lost 1-2 | -191493 |
| 6standard | 606 | Hashizume, Nobuyuki (1497) | Won 2-0 | +181511 |
| 7standard | 408 | Komatsu, Satoru (Tottori) (1515) | Won 2-0 | +181529 |
| 8standard | 287 | Hiraga, Masahiro (1687) | Won 2-0 | +211550 |
| 9standard | 224 | Lee, Chia (1571) | Lost 0-2 | -181532 |
| top | average opponent: 1530record: 5-4 | new rating: 1532 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 47 | Ishiguro, Youhei (1500) | Lost 1-2 | -191489 |
| 3modern | 561 | Seshimo, Kazuyoshi (1500) | Draw 1-1 | +11490 |
| 4modern | 472 | Tanigawa, Futa (1496) | Won 2-0 | +181508 |
| 5modern | 331 | Naito, Yuuki (1460) | Won 2-0 | +171525 |
| 6modern | 201 | Katoh, Daisuke (Shizuoka) (1538) | Won 2-1 | +181543 |
| 7modern | 129 | Moriya, Toshihiko (1668) | Lost 1-2 | -161527 |
| 8modern | 216 | Yabuki, Shunichi (1596) | Lost 1-2 | -161511 |
| 9modern | 227 | Takahashi, Kei (1547) | Draw 0-0 | 01511 |
| top | average opponent: 1538record: 3-3-2 | new rating: 1511 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 176 | Amino, Kaoru (1484) | Won 2-0 | +181485 |
| 3sealed | 11 | Tamura, Youhei (1478) | Won 2-0 | +181503 |
| 4sealed | 17 | Yoshiaki K., (1558) | Won 2-0 | +191522 |
| 5sealed | 28 | Endo, Jun'Ichi (1621) | Lost 0-2 | -161506 |
| 6sealed | 41 | Taniguchi, Masayoshi (1539) | Lost 1-2 | -181488 |
| 7sealed | 178 | Fukuta, Shingo (1539) | Won 2-1 | +191507 |
| 8sealed | 155 | Takeda, Hiroki (1533) | Lost 0-2 | -171490 |
| 9sealed | 122 | Ootake, Masanori (1489) | Won 2-1 | +181508 |
| top | average opponent: 1530record: 5-3 | new rating: 1508 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 188 | Fujisawa, Masashi (1508) | Won 2-1 | +181518 |
| 2standard | 8 | Sugimoto, Yuuki (1561) | Lost 0-2 | -171501 |
| 3standard | 194 | Jun M., (1501) | Lost 0-2 | -181483 |
| 4standard | 275 | Iwao, Kenji (1481) | Won 2-0 | +181501 |
| 5standard | 269 | Yamauchi, Shou (1481) | Lost 0-2 | -181483 |
| 6standard | 277 | Tashima, Chihiro (1596) | Lost 1-2 | -161467 |
| top | average opponent: 1521record: 2-4 | new rating: 1467 | ||