Deguchi, Keizou
Current rating: 1556
Record: 39-37-3
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1595 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 384 | Okabe, Kazuhiro (1481) | Won 2-1 | +161611 |
| 2standard | 242 | Yamaguchi, Satoshi 1114 (1590) | Lost 0-2 | -181593 |
| 3standard | 586 | Furusawa, Reona (1599) | Draw 1-1 | 01593 |
| 4standard | 607 | Fujioka, Naoya (1549) | Lost 1-2 | -191574 |
| 5standard | 701 | Okamoto, Yoshiaki (1492) | Lost 1-2 | -191555 |
| 6standard | 678 | Sakamoto, Satoshi (1580) | Won 2-0 | +181573 |
| 7standard | 544 | Yamamoto, Takahiro (1700) | Lost 1-2 | -151558 |
| 8standard | 501 | Eda, Kazuhiro (1459) | Draw 1-1 | -21556 |
| top | average opponent: 1556record: 2-4-2 | new rating: 1556 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 576 | Murata, Dai (1500) | Won 2-0 | +161616 |
| 2sealed | 448 | Motegi, Ryouta (1505) | Won 2-1 | +161632 |
| 3sealed | 270 | Hasegawa, Kazunari (1779) | Lost 0-2 | -151617 |
| 4sealed | 502 | Hirano, Jyun (1466) | Lost 1-2 | -211596 |
| 5sealed | 669 | Ohmori, Yoshitsugu (1473) | Won 2-0 | +161612 |
| 6sealed | 608 | Terada, Shuuhei (1698) | Lost 1-2 | -171595 |
| top | average opponent: 1570record: 3-3 | new rating: 1595 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1601 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 22 | Tsujimoto, Shingo (1495) | Won 2-1 | +161617 |
| 4standard | 146 | Naitou, Yohei (1583) | Won 2-1 | +181635 |
| 5standard | 84 | Oono, Seita (1675) | Lost 1-2 | -171618 |
| 6standard | 112 | Oomori, Yasutomo (1825) | Won 2-1 | +211639 |
| 7standard | 54 | Ogino, Genki (1384) | Lost 0-2 | -221617 |
| 8standard | 249 | Ichikawa, Hideyuki (1688) | Lost 0-2 | -171600 |
| top | average opponent: 1608record: 3-3 | new rating: 1600 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 531 | Wada, Kazunori (1541) | Won 2-1 | +181551 |
| 2sealed | 11 | Kubo, Yuta1677 (1450) | Won 2-1 | +161567 |
| 3sealed | 141 | Kamo, Riki (1726) | Lost 0-2 | -151552 |
| 4sealed | 292 | Ikeda, Takahiro (1698) | Won 2-1 | +211573 |
| 5sealed | 266 | Yasuda, Masayuki (1854) | Won 2-1 | +231596 |
| 6sealed | 312 | Murata, Atsushi (1663) | Won 2-0 | +191615 |
| 7sealed | 155 | Kawarada, Wataru (1575) | Won 2-0 | +171632 |
| 8sealed | 50 | Inoue, Hiroyuki0875 (1682) | Lost 0-2 | -171615 |
| 9sealed | 182 | Matsumoto, Shota (1584) | Lost 1-2 | -181597 |
| 10draft | 639 | Matsubara, Tohru (1757) | Lost 1-2 | -151582 |
| 11draft | 634 | Kawai, Yusuke 7495 (1555) | Won 2-1 | +171599 |
| 12draft | 636 | Tsujikawa, Taiga (1710) | Lost 1-2 | -161583 |
| 13draft | 635 | Nomura, Hidehiro (1811) | Won 2-1 | +221605 |
| 14draft | 582 | Motegi, Ryouta (1504) | Won 2-1 | +161621 |
| 15draft | 619 | Tobisawa, Takenori (1516) | Lost 0-2 | -201601 |
| top | average opponent: 1642record: 9-6 | new rating: 1601 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 529 | Yamamoto, Akimasa (1704) | Lost 0-2 | -151539 |
| 2sealed | 655 | Ru, Yi (1576) | Won 2-0 | +181557 |
| 3sealed | 634 | Hiromasa, Ryuusuke (1632) | Draw 1-1 | +21559 |
| 4sealed | 815 | Sakai, Daichi (1467) | Won 2-1 | +161575 |
| 5sealed | 551 | Horiike, Shinya (1462) | Lost 1-2 | -201555 |
| 6sealed | 726 | Kabaki, Ken (1503) | Won 2-1 | +171572 |
| 7sealed | 555 | Abe, Masahide (1420) | Lost 0-2 | -211551 |
| 8sealed | 667 | Onishi, Kouhei (1533) | Lost 0-2 | -181533 |
| top | average opponent: 1537record: 3-4-1 | new rating: 1533 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 565 | Yamamoto, Takahiro (1659) | Won 2-0 | +191577 |
| 2standard | 501 | Oohusa, Ryohei (1462) | Lost 0-2 | -201557 |
| 3standard | 721 | Sasaki, Osamu (1498) | Lost 1-2 | -191538 |
| 4standard | 1206 | Kanou, Takuya (1511) | Won 2-0 | +181556 |
| 5standard | 753 | Takano, Hayato (1536) | Won 2-1 | +171573 |
| 6standard | 660 | Mori, Takeshi (1649) | Lost 1-2 | -161557 |
| 7standard | 867 | Huruta, Syuuhei (1463) | Won 2-0 | +161573 |
| 8standard | 533 | Endo, Koki (1516) | Lost 1-2 | -191554 |
| top | average opponent: 1537record: 4-4 | new rating: 1554 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1510 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 552 | Hinohara, Toyokazu (1363) | Won 2-0 | +151525 |
| 2standard | 54 | Masashi, Shirai (1518) | Won 2-1 | +181543 |
| 3standard | 437 | Furukawa, Takuto (1520) | Won 2-1 | +181561 |
| 4standard | 77 | Matsubara, Tohru (1692) | Won 2-0 | +201581 |
| 5standard | 69 | Kumagai, Riku (2029) | Lost 1-2 | -101571 |
| 6standard | 368 | Kawamura, Sintarou (1560) | Won 2-1 | +171588 |
| 7standard | 174 | Yabuta, Junichi (1833) | Won 2-0 | +231611 |
| 8standard | 130 | Imai, Kenta (1717) | Lost 1-2 | -161595 |
| 9standard | 229 | Uchida, Shinya (1604) | Lost 0-2 | -181577 |
| 10standard | 436 | Yoshida, Koki (1507) | Lost 0-2 | -191558 |
| 12standard | 278 | Kitano, Masaaki (1553) | Won 2-1 | +171575 |
| 13standard | 202 | Sawasato, Yuuki (1581) | Lost 0-2 | -171558 |
| top | average opponent: 1623record: 7-5 | new rating: 1558 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 61 | Yonemura, Tomomi (1500) | Won 2-0 | +181501 |
| 2sealed | 421 | Sugita, Wataru (1521) | Lost 1-2 | -171484 |
| 3sealed | 1038 | Iwatsu, Hirotaka (1649) | Won 2-0 | +211505 |
| 4sealed | 385 | Fujita, Toshitake (1434) | Won 2-0 | +161521 |
| 5sealed | 397 | Nakaya, Shinya (1542) | Lost 1-2 | -171504 |
| 6sealed | 580 | Igarashi, Junpei (1547) | Won 2-1 | +191523 |
| 7sealed | 536 | Kawabata, Ryosuke (1712) | Won 2-1 | +211544 |
| 8sealed | 339 | Kondo, Hirotsugu (1505) | Lost 0-2 | -191525 |
| 9sealed | 517 | Higuchi, Makoto (1658) | Lost 1-2 | -151510 |
| top | average opponent: 1563record: 5-4 | new rating: 1510 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 488 | Kawano, Yoshinari (1500) | Won 2-0 | +181518 |
| 2sealed | 101 | Fujioka, Naoya (1501) | Lost 1-2 | -181500 |
| 3sealed | 279 | Ikeda, Tatsurou (1421) | Won 2-0 | +161516 |
| 4sealed | 346 | Ootsuka, Yuusuke (1685) | Lost 1-2 | -151501 |
| 5sealed | 294 | Muneta, Yasutoshi (1493) | Lost 0-2 | -181483 |
| 6sealed | 377 | Kawamura, Takumi (1483) | Lost 0-2 | -181465 |
| 7sealed | 305 | Okumura, Tomoki (1463) | Won 2-0 | +181483 |
| top | average opponent: 1506record: 3-4 | new rating: 1483 | ||