Sato, Koji
Current rating: 1483
Record: 36-40-2
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 38 | Hasegawa, Keijiro (1500) | Lost 1-2 | -181484 |
| 2standard | 556 | Ichikawa, Makoto (1406) | Won 2-0 | +171501 |
| 3standard | 728 | Kawabata, Koji (1500) | Won 2-0 | +181519 |
| 4standard | 422 | Choi, Kiho (1569) | Lost 1-2 | -171502 |
| 5standard | 679 | Ishitsuka, Hiroyuki (1490) | Lost 0-2 | -191483 |
| top | average opponent: 1493record: 2-3 | new rating: 1483 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 643 | Yakushi, Hideki (1493) | Lost 1-2 | -191525 |
| 2standard | 715 | Saegusa, Nobuyuki (1508) | Won 2-1 | +171542 |
| 3standard | 1039 | Tanaka, Hironao (1449) | Lost 0-2 | -191523 |
| 4standard | 1121 | Tubouchi, Keita (1383) | Lost 0-2 | -211502 |
| top | average opponent: 1458record: 1-3 | new rating: 1502 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 356 | Wada, Yuusaku (1496) | Won 2-1 | +191459 |
| 2standard | 333 | Hokari, Yuuki (1503) | Lost 1-2 | -171442 |
| 3standard | 1253 | Ohno, Tadashi (1441) | Won 2-1 | +181460 |
| 4standard | 782 | Kasuga, Ryou (Saitama) (1513) | Lost 0-2 | -171443 |
| 5standard | 910 | Takeda, Daisuke (1504) | Lost 1-2 | -171426 |
| 6standard | 1052 | Sakai, Arata (1452) | Won 2-0 | +181444 |
| 7standard | 860 | Yagishita, Takuya (1503) | Won 2-0 | +191463 |
| 8standard | 839 | Kim, Chang Kyum (1452) | Won 2-1 | +181481 |
| 9standard | 501 | Kitagawa, Takeru (1507) | Won 2-0 | +191500 |
| 10standard | 309 | Katagiri, Kazushi (1594) | Won 2-0 | +191519 |
| 11standard | 156 | Kinugasa, Satoshi (1730) | Won 1-0 | +221541 |
| 12standard | 142 | Takita, Takeshi (1581) | Lost 0-2 | -171524 |
| 13standard | 196 | Matsuzaki, Akira (1583) | Won 2-1 | +191543 |
| 14standard | 200 | Seki, Takayuki (1590) | Lost 0-2 | -171526 |
| 15standard | 229 | Arai, Kazuki (1512) | Won 2-1 | +181544 |
| top | average opponent: 1531record: 10-5 | new rating: 1544 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 452 | Kim, Panjae (1500) | Lost 0-2 | -171440 |
| 2sealed | 973 | Noguchi, Hiromasa (1406) | Lost 0-2 | -191421 |
| 3sealed | 1139 | Watanabe, Joe (1472) | Won 2-1 | +191440 |
| top | average opponent: 1459record: 1-2 | new rating: 1440 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 734 | Koike, Takumi (1385) | Lost 1-2 | -201447 |
| 2standard | 822 | Takekuma, Yusuke (1480) | Lost 0-2 | -171430 |
| 3standard | 1107 | Kamei, Hiroto (1525) | Won 2-1 | +201450 |
| 4standard | 878 | Yamashita, Masanori (1486) | Won 2-1 | +181468 |
| 5standard | 644 | Takagi, Hideto (1484) | Lost 0-2 | -171451 |
| 6standard | 890 | Ohshiba, Atsushi (1484) | Won 2-0 | +181469 |
| 7standard | 711 | Awane, Hiroyuki (1486) | Lost 1-2 | -171452 |
| 8standard | 642 | Semura, Junichi (1629) | Lost 0-2 | -151437 |
| 9standard | 553 | Matsumoto, Shou (1542) | Won 2-0 | +201457 |
| top | average opponent: 1500record: 4-5 | new rating: 1457 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 2096 | Hiromasa, Ryuusuke (1585) | Lost 0-2 | -161459 |
| 3sealed | 2373 | Hosokouji, Noriyuki (1500) | Won 2-0 | +191478 |
| 4sealed | 2228 | Ueno, Hiroshi (1503) | Won 2-1 | +181496 |
| 5sealed | 2153 | Hosoiri, Yoshihito (1618) | Lost 0-2 | -161480 |
| 6sealed | 2169 | Cho, Kou (1741) | Lost 1-2 | -131467 |
| top | average opponent: 1589record: 2-3 | new rating: 1467 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 695 | Itou, Daiki (1463) | Won 2-0 | +181490 |
| 3sealed | 622 | Okamura, Ryoma (1630) | Lost 1-2 | -151475 |
| 4sealed | 866 | Nakayama, Tomoki (1470) | Lost 1-2 | -181457 |
| 5sealed | 891 | Matsumoto, Atsushi (1481) | Won 2-1 | +181475 |
| 6sealed | 804 | Kawanishi, Naoki (1463) | Won 2-1 | +181493 |
| 7sealed | 789 | Kokubun, Takeshi (1500) | Lost 0-2 | -181475 |
| top | average opponent: 1501record: 3-3 | new rating: 1475 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 9 | Mizuguchi, Jun (1402) | Won 2-1 | +171484 |
| 3sealed | 99 | Li, Maxwell (1624) | Lost 1-2 | -151469 |
| 4sealed | 226 | Jamison, Tasha M (1520) | Won 2-0 | +191488 |
| 5sealed | 134 | Kamada, Masahiro (1589) | Won 2-0 | +201508 |
| 6sealed | 86 | Otani, Makoto (1449) | Lost 1-2 | -201488 |
| 7sealed | 90 | Ishikawa, Shou (1591) | Lost 1-2 | -161472 |
| top | average opponent: 1529record: 3-3 | new rating: 1472 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 74 | Kojima, Toshihiro (1408) | Won 2-0 | +171474 |
| 4standard | 36 | Kawaguchi, Takashi (1635) | Lost 1-2 | -151459 |
| 5standard | 155 | Kodama, Kentaro (1635) | Lost 1-2 | -151444 |
| 6standard | 137 | Kishi, Hideyuki (1486) | Won 2-0 | +191463 |
| 7standard | 186 | Nakamura, Takatoshi (1689) | Won 2-0 | +221485 |
| 8standard | 105 | Ou, Kaitou (1527) | Lost 0-2 | -181467 |
| top | average opponent: 1563record: 3-3 | new rating: 1467 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 242 | Maenosono, Kenta (1520) | Lost 1-2 | -181465 |
| 3standard | 341 | Nakagawa, Hikaru (1503) | Lost 1-2 | -171448 |
| 4standard | 489 | Ota, Youhei (1482) | Won 2-1 | +191467 |
| 5standard | 436 | Nishiguchi, Hajime (1439) | Won 2-1 | +171484 |
| 6standard | 303 | Sato, Kimihiko (1671) | Lost 1-2 | -141470 |
| 7standard | 340 | Takeishi, Kouji (1747) | Lost 1-2 | -131457 |
| top | average opponent: 1560record: 2-4 | new rating: 1457 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1037 | Sakamoto, Genta (1500) | Lost 0-2 | -181464 |
| 2sealed | 1099 | Mori, Kouki (1482) | Lost 0-2 | -181446 |
| 3sealed | 1136 | Takamatsu, Yoshiyuki (1465) | Won 2-1 | +191465 |
| 4sealed | 1024 | Masuda, Masakazu (1634) | Won 2-1 | +211486 |
| 5sealed | 951 | I., Masato (1499) | Lost 0-2 | -181468 |
| 6sealed | 958 | Masuyama, Yuko (1292) | Won 2-1 | +151483 |
| top | average opponent: 1479record: 3-3 | new rating: 1483 | ||
| Grand Prix Sapporo 2000 (PCY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 43 | Guerrette, Chris (1482) | Draw 1-1 | 01500 |
| 2sealed | 58 | Nomura, Eiji (1500) | Won 2-1 | +181518 |
| 3sealed | 54 | Nishimaki, Akira (1518) | Lost 0-2 | -181500 |
| 4sealed | 86 | Miyazaki, Junpei (1500) | Lost 1-2 | -181482 |
| 5sealed | 100 | Imagawa, Kiyoshi (1482) | Won 2-0 | +181500 |
| 6sealed | 75 | Nadachi, Shinji (1500) | Draw 1-1 | 01500 |
| 7sealed | 80 | Arai, Jin (1499) | Lost 1-2 | -181482 |
| top | average opponent: 1497record: 2-3-2 | new rating: 1482 | ||