Sakai, Tatsuya
Current rating: 1714 (#5640)
Record: 31-22 (GP) / 8-6 (professional)
| Regional Championships Aichi 2023 (pioneer) | starting rating: 1660 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 115 | Peng, Shicheng (1500) | Lost 1-2 | -211639 |
| 2pioneer | 74 | Shinohara, Gen (1551) | Lost 0-2 | -201619 |
| 3pioneer | 120 | Yamada, Takuya (1669) | Won 2-1 | +191638 |
| 4pioneer | 71 | Akaike, Yo (1715) | Won 2-1 | +191657 |
| 5pioneer | 62 | Nakamura, Koki (1502) | Won 2-1 | +161673 |
| 6pioneer | 31 | Matsubara, Yuusuke (1645) | Won 2-0 | +171690 |
| 7pioneer | 19 | Sakata, Naoya (1573) | Won 2-0 | +161706 |
| 8pioneer | 13 | Ishikawa, Hikaru (1598) | Lost 1-2 | -201686 |
| 9pioneer | 23 | Negishi, Nobuhiko (1556) | Won 2-1 | +161702 |
| 10pioneer | 24 | Matsuda, Hideyuki (1515) | Won 2-0 | +141716 |
| 11pioneer | 7 | Park, Geon-Wook (1755) | Lost 0-2 | -171699 |
| 12pioneer | 21 | Oohashi, Yoshihiro (1547) | Won 2-0 | +151714 |
| top | average opponent: 1594record: 8-4 | new rating: 1714 | ||
| Regional Championships Yokohama 2023 (ONE standard) | starting rating: 1687 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 86 | Anan, Kazuyoshi (1613) | Won 2-0 | +171704 |
| 2standard | 3 | Nakamura, Kazuhiro (1628) | Won 2-0 | +161720 |
| 3standard | 6 | Tanaka, Hironori (1649) | Won 2-1 | +171737 |
| 4standard | 1 | Kong, Sangjoon (1608) | Lost 1-2 | -201717 |
| 5standard | 24 | Ebitani, Keisuke (1773) | Lost 0-2 | -171700 |
| 6standard | 29 | Takahashi, Jun (1634) | Lost 0-2 | -191681 |
| 7standard | 51 | Ishibashi, Yukinori (1520) | Lost 0-2 | -211660 |
| top | average opponent: 1632record: 3-4 | new rating: 1660 | ||
| Players Tour Online 1 (MTGA IKO standard) | starting rating: 1618 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 56 | Yada, Kazuki (1899) | Lost 1-2 | -131605 |
| 2standard | 66 | Prosek, Daniel (1647) | Won 2-0 | +191624 |
| 3standard | 46 | Gobetti, Enrico (1577) | Won 2-0 | +171641 |
| 4standard | 38 | Akerstrom, Janne (1644) | Won 2-0 | +181659 |
| 5standard | 26 | Mauch, Hannes (2063) | Won 2-1 | +251684 |
| 6standard | 8 | Toledo, Daniel (1799) | Lost 1-2 | -161668 |
| 7standard | 17 | Alves, Guilherme (1658) | Lost 0-2 | -181650 |
| 8standard | 41 | Di Bartolomei, Andrea (1550) | Won 2-0 | +161666 |
| 9standard | 31 | Rolph, Sam-Luca (1910) | Lost 0-2 | -131653 |
| 10standard | 40 | Claudel, Slater (1753) | Won 2-1 | +201673 |
| 11standard | 30 | Floch, Ivan (1910) | Lost 0-2 | -141659 |
| 12standard | 39 | Ichikawa, Yuuki (1910) | Lost 1-2 | -141645 |
| 13standard | 44 | Torres, Bernardo (1830) | Won 2-0 | +221667 |
| 14standard | 31 | de Graaff, Claes (1800) | Won 2-1 | +201687 |
| 15standard | 29 | Guichard, Louis (1693) | ID | 01687 |
| top | average opponent: 1776record: 8-6-1 | new rating: 1687 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1658 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 427 | Suzuki, Ryo (1666) | Lost 1-2 | -181640 |
| 4modern | 393 | Matsubara, Takeyuki (1709) | Lost 0-2 | -171623 |
| 5modern | 753 | Tokeshi, Hiroki (1388) | Won 2-0 | +141637 |
| 6modern | 492 | Omiya, Takahiro (1604) | Lost 0-2 | -191618 |
| top | average opponent: 1592record: 1-3 | new rating: 1618 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1657 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 355 | Ichi, Kenji (1500) | Won 2-0 | +151672 |
| 3standard | 36 | Wada, Kazumasa (1509) | Won 2-1 | +151687 |
| 4standard | 169 | Takahashi, Taro (1580) | Lost 1-2 | -201667 |
| 5standard | 228 | Matsubara, Shintaro (1559) | Lost 1-2 | -201647 |
| 6standard | 569 | Mimido, Ryuji (1509) | Won 2-0 | +161663 |
| 7standard | 338 | Nishi, Eiichi (1537) | Won 2-0 | +151678 |
| 8standard | 302 | Teramoto, Tsubasa (1548) | Lost 1-2 | -201658 |
| top | average opponent: 1534record: 4-3 | new rating: 1658 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 504 | Ishii, Asuha (1461) | Won 2-1 | +151647 |
| 2standard | 304 | Kawano, Airi (1518) | Won 2-0 | +161663 |
| 3standard | 386 | Okai, Toshiki (1838) | Lost 1-2 | -151648 |
| 4standard | 581 | Kozutsumi, Shin (1467) | Won 2-0 | +151663 |
| 5standard | 400 | Ohkuma, Atushi (1547) | Lost 1-2 | -211642 |
| 6standard | 509 | Miyajima, Jun'Ichi (1499) | Won 2-1 | +161658 |
| 7standard | 376 | Kim, Jinho (1544) | Won 2-0 | +161674 |
| 8standard | 344 | Hirano, Mikita (1727) | Lost 0-2 | -171657 |
| top | average opponent: 1575record: 5-3 | new rating: 1657 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 350 | Sakai, Toshinori (1713) | Won 2-1 | +221522 |
| 2sealed | 292 | Matubayashi, Kazunori (1645) | Won 2-0 | +201542 |
| 3sealed | 376 | Katou, Shin'ya (1590) | Won 2-0 | +191561 |
| 4sealed | 8 | Taniguchi, Hiroaki (1912) | Lost 1-2 | -121549 |
| 5sealed | 345 | Ma, Noah (1740) | Won 2-1 | +221571 |
| 6sealed | 326 | Ji, Zihao (1785) | Won 2-1 | +211592 |
| 7sealed | 115 | Hiroi, Genki (1751) | Won 2-0 | +211613 |
| 8sealed | 74 | Usui, Haruki (1855) | Won 2-0 | +231636 |
| 9sealed | 22 | Makino, Hiroyuki (1643) | Won 2-0 | +181654 |
| 10draft | 604 | Saito, Hirotsugu (1811) | Won 2-0 | +211675 |
| 11draft | 600 | Sekine, Naoto (1768) | Lost 1-2 | -171658 |
| 12draft | 604 | Shimizu, Ryouta (1630) | Lost 1-2 | -181640 |
| 13draft | 736 | Saito, Tomoharu (1886) | Lost 1-2 | -141626 |
| 14draft | 552 | Anan, Kazuyoshi (1633) | Won 2-1 | +181644 |
| 15draft | 633 | Kumagai, Riku (1974) | Lost 1-2 | -121632 |
| top | average opponent: 1756record: 10-5 | new rating: 1632 | ||