Wachigai, Hirotaka
Current rating: 1216
Record: 33-56
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1323 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 347 | Mayama, Syouta (1515) | Lost 1-2 | -141309 |
| 3pioneer | 569 | Ishigami, Nobuhide (1550) | Lost 0-2 | -141295 |
| 4pioneer | 708 | Yamauchi, Takashi (1348) | Lost 0-2 | -171278 |
| 5pioneer | 710 | Onishi, Akira (1497) | Lost 1-2 | -141264 |
| 6pioneer | 637 | Ishihama, Yuki (1294) | Lost 0-2 | -181246 |
| 7pioneer | 550 | Jin, Shen (1429) | Lost 1-2 | -141232 |
| 8pioneer | 439 | Suzuki, Yuga (1367) | Lost 1-2 | -161216 |
| top | average opponent: 1429record: 0-7 | new rating: 1216 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1392 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 294 | Hattori, Takesi (1558) | Lost 0-2 | -151377 |
| 3sealed | 909 | Matsuda, Kenji (1506) | Lost 1-2 | -161361 |
| 4sealed | 801 | Seki, Manabu (1392) | Lost 0-2 | -171344 |
| 5sealed | 867 | Yamazaki, Sumio (1430) | Won 2-0 | +201364 |
| 6sealed | 754 | Yabata, Kenichi (1258) | Lost 1-2 | -201344 |
| 7sealed | 642 | Sarusawa, Yuichi (1211) | Lost 0-2 | -211323 |
| top | average opponent: 1392record: 1-5 | new rating: 1323 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1384 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 301 | Terasawa, Kazuya (1766) | Lost 0-2 | -111373 |
| 3modern | 673 | Nakao, Shunji (1496) | Won 2-0 | +201393 |
| 4modern | 418 | Ito, Kazuma (1561) | Lost 1-2 | -151378 |
| 5modern | 916 | Koyama, Yuji (1676) | Lost 1-2 | -121366 |
| 6modern | 843 | Tanoi, Kyouhei (1490) | Won 2-1 | +201386 |
| 7modern | 703 | Choi, Kiho (1639) | Won 2-1 | +221408 |
| 8modern | 457 | Kusakabe, Yu (1506) | Lost 1-2 | -161392 |
| top | average opponent: 1591record: 3-4 | new rating: 1392 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 492 | Yamazaki, Masami (1518) | Lost 0-2 | -171450 |
| 3standard | 559 | Fukutani, Mitumasa (1431) | Lost 0-2 | -181432 |
| 4standard | 718 | Hayashi, Masayori (1516) | Won 2-1 | +191451 |
| 5standard | 619 | Kamimura, Fumihiro (1620) | Lost 1-2 | -151436 |
| 6standard | 717 | Mihashi, Takanobu (1495) | Lost 0-2 | -171419 |
| 7standard | 613 | Higaki, Motohide (1494) | Lost 1-2 | -161403 |
| 8standard | 590 | Huang, Erxuan (1391) | Lost 1-2 | -191384 |
| top | average opponent: 1495record: 1-6 | new rating: 1384 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 293 | Shen, Yufei (1534) | Won 2-1 | +191496 |
| 3standard | 519 | Goshima, Akito (1680) | Won 2-1 | +211517 |
| 4standard | 225 | Matheson, Roland (1773) | Won 2-0 | +231540 |
| 5standard | 196 | Igura, Hayato (1533) | Lost 0-2 | -191521 |
| 6standard | 375 | Kaneko, Masayuki3656 (1770) | Lost 0-2 | -131508 |
| 7standard | 457 | Yoshino, Kohei (1630) | Won 2-1 | +201528 |
| 8standard | 358 | Fujita, Toshihide (1729) | Won 2-0 | +221550 |
| 9standard | 105 | Kato, Kensuke (1795) | Lost 1-2 | -141536 |
| 10standard | 133 | Ohori, Akihito (1481) | Lost 0-2 | -191517 |
| 11standard | 154 | Boku, Takashi (1725) | Lost 1-2 | -141503 |
| 12standard | 163 | Satou, Yoshikazu (1392) | Lost 1-2 | -201483 |
| 13standard | 157 | Hayata, Akira (1598) | Lost 0-2 | -161467 |
| top | average opponent: 1637record: 5-7 | new rating: 1467 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1442 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 334 | Ogata, Nobuhiko (1618) | Lost 0-2 | -151427 |
| 3sealed | 817 | Takeda, Yuki 3088 (1500) | Won 2-0 | +201447 |
| 4sealed | 542 | Iitsuka, Yuuki (1660) | Won 2-0 | +221469 |
| 5sealed | 293 | Ishii, Kenta (1557) | Won 2-1 | +191488 |
| 6sealed | 158 | Yokota, Kazuya (1460) | Won 2-0 | +181506 |
| 7sealed | 178 | Furuya, Youhei (1719) | Lost 0-2 | -141492 |
| 8sealed | 318 | Onoda, Kenji (1664) | Lost 1-2 | -151477 |
| top | average opponent: 1597record: 4-3 | new rating: 1477 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 464 | Wakita, Daiki (1508) | Lost 1-2 | -191500 |
| 3sealed | 625 | Genno, Yuusuke (1475) | Lost 0-2 | -181482 |
| 4sealed | 1023 | Hamada, Takayuki (1479) | Won 2-0 | +181500 |
| 5sealed | 861 | Kunisada, Shougo (1475) | Lost 0-2 | -191481 |
| 6sealed | 786 | Akase, Kousuke (1475) | Lost 0-2 | -181463 |
| 7sealed | 879 | Amemiya, Kouhei (1429) | Lost 0-2 | -181445 |
| 8sealed | 786 | Kisanuki, Akira (1365) | Won 2-0 | +161461 |
| 9sealed | 665 | Hagiwara, Satoshi (1411) | Lost 0-2 | -191442 |
| top | average opponent: 1452record: 2-6 | new rating: 1442 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 121 | Kurokawa, Shutaro (1498) | Lost 1-2 | -181446 |
| 3modern | 1040 | Tabata, Yuusuke (1490) | Won 2-0 | +191465 |
| 4modern | 872 | Ishida, Ryuichiro (1509) | Won 2-0 | +191484 |
| 5modern | 280 | Kuzuhara, Taiki (1528) | Won 2-1 | +191503 |
| 6modern | 138 | Masatsugu, Tatsuya (1608) | Lost 0-2 | -161487 |
| 7modern | 301 | Cheng Han, Yu (1557) | Lost 0-2 | -171470 |
| 8modern | 661 | Hirai, Masumi (1334) | Won 2-1 | +151485 |
| 9modern | 505 | Jun, Kato (1536) | Won 2-1 | +191504 |
| 10modern | 249 | Matsumoto, Fumiya (1862) | Won 2-1 | +251529 |
| 11modern | 189 | Takakura, Shota (1721) | Lost 0-2 | -151514 |
| 12modern | 250 | Amornjarusiri, Pathorn (1508) | Won 2-0 | +181532 |
| 13modern | 172 | Ootsubo, Tsubasa (1546) | Lost 1-2 | -181514 |
| 14modern | 238 | Furusawa, Shu (1569) | Lost 0-2 | -171497 |
| 15modern | 222 | Aoki, Yoshitsugu (1689) | Won 2-1 | +221519 |
| top | average opponent: 1568record: 8-6 | new rating: 1519 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 37 | Ogasawara, Yuu (1482) | Won 2-0 | +181464 |
| 3standard | 135 | Nakamura, Mio (1536) | Won 2-0 | +201484 |
| 4standard | 235 | Satou, Yoshikazu (1396) | Won 2-0 | +161500 |
| 5standard | 124 | Morii, Masahiko (1522) | Won 2-1 | +181518 |
| 6standard | 81 | Yoshizawa, Kaoru (1546) | Lost 1-2 | -171501 |
| 7standard | 165 | Keller, Thomas (1761) | Won 2-0 | +231524 |
| 8standard | 42 | Shoji, Kenta (1621) | Lost 1-2 | -171507 |
| 9standard | 161 | Matsumoto, Shou (1479) | Lost 0-2 | -181489 |
| 10standard | 325 | Shibata, Syouhei (1570) | Won 2-0 | +191508 |
| 11standard | 173 | Usui, Haruki (1890) | Lost 0-2 | -111497 |
| 12standard | 219 | Nakamura, Kazutaka (1517) | Lost 1-2 | -181479 |
| 13standard | 313 | Omiya, Takahiro (1492) | Lost 0-2 | -181461 |
| 14standard | 299 | Samejima, Ippei (1623) | Lost 1-2 | -151446 |
| 15standard | 283 | Kurikage, Kazuya (1400) | Won 2-1 | +181464 |
| top | average opponent: 1560record: 7-7 | new rating: 1464 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 447 | Kim, Min-Seok (1500) | Lost 0-2 | -181482 |
| 4standard | 807 | Kokawa, Tsunao (1353) | Lost 1-2 | -201462 |
| 5standard | 1241 | Takahisa, Shishido (1499) | Lost 1-2 | -181444 |
| 6standard | 1071 | Kobayashi, Kazutaka (Kanagawa) (1483) | Lost 0-2 | -171427 |
| 7standard | 1223 | Yougai, Aiki (1464) | Lost 0-2 | -171410 |
| 8standard | 1060 | Ara, Genta (1446) | Won 2-0 | +181428 |
| 9standard | 864 | Nakahashi, Yoshihiro (1386) | Won 2-0 | +181446 |
| top | average opponent: 1447record: 2-5 | new rating: 1446 | ||