Sato, Koichiro
Current rating: 1410
Record: 34-40
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 240 | Kawabata, Koji (1500) | Lost 1-2 | -161405 |
| 2standard | 408 | Ebisujima, Isao (1494) | Lost 0-2 | -171388 |
| 3standard | 774 | Okusu, Hiromu (1445) | Won 2-1 | +201408 |
| 4standard | 662 | Yamazaki, Takayoshi (1399) | Won 2-1 | +171425 |
| 5standard | 628 | Harada, Masato (1545) | Lost 0-2 | -151410 |
| top | average opponent: 1477record: 2-3 | new rating: 1410 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 127 | Tsuchiya, Yoshihiro (1367) | Lost 1-2 | -191437 |
| 2sealed | 670 | Ono, Kyohei (1482) | Won 2-1 | +191456 |
| 3sealed | 806 | Fukuyama, Kyohei (1505) | Lost 0-2 | -171439 |
| 4sealed | 905 | Yoshino, Shumpei (1489) | Lost 0-2 | -181421 |
| top | average opponent: 1461record: 1-3 | new rating: 1421 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 495 | Endo, Naomasa (1500) | Won 2-0 | +191509 |
| 2standard | 92 | Takanohashi, Tatsuya (1465) | Won 2-0 | +171526 |
| 3standard | 4 | Nakamichi, Daisuke (1757) | Lost 0-2 | -141512 |
| 4standard | 319 | Yatori, Naoyuki (1459) | Won 2-0 | +171529 |
| 5standard | 183 | Okita, Akito (1408) | Lost 0-2 | -201509 |
| 6standard | 413 | Yuki, Ryosuke (1532) | Lost 1-2 | -181491 |
| 7standard | 566 | Takemura, Daichi (1487) | Lost 1-2 | -181473 |
| 8standard | 541 | Jung, Ga Ram (1543) | Lost 1-2 | -171456 |
| top | average opponent: 1519record: 3-5 | new rating: 1456 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 607 | Shibasaki, Jun (1539) | Lost 1-2 | -181515 |
| 2standard | 799 | Ishino, Katsunori (1493) | Lost 0-2 | -181497 |
| 3standard | 1111 | Kosuga, Shuhei (1502) | Won 2-0 | +181515 |
| 4standard | 936 | Ashikawa, Akihiro (1479) | Won 2-0 | +171532 |
| 5standard | 769 | Itakura, Kenichi (1460) | Won 2-1 | +171549 |
| 6standard | 544 | Suzuki, Yuga (1515) | Lost 0-2 | -191530 |
| 7standard | 721 | Shiina, Daisuke (1381) | Lost 1-2 | -201510 |
| 8standard | 696 | Jinba, Daisuke (1446) | Lost 1-2 | -201490 |
| top | average opponent: 1477record: 3-5 | new rating: 1490 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 244 | Nishiguchi, Yoshinori (1323) | Won 2-0 | +141575 |
| 2sealed | 109 | Kawai, Yoshihiro8128 (1456) | Lost 0-2 | -201555 |
| 3sealed | 669 | Ishizeki, Masaki (1499) | Lost 0-2 | -191536 |
| 4sealed | 921 | Tsutsumi, Ryuta (1449) | Won 2-1 | +161552 |
| 5sealed | 643 | Satou, Takahisa (1485) | Lost 0-2 | -191533 |
| top | average opponent: 1442record: 2-3 | new rating: 1533 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 503 | Fujiyoshi, Manabu (1532) | Lost 0-2 | -171502 |
| 3standard | 791 | Murakami, Keisuke (1635) | Won 2-0 | +201522 |
| 4standard | 393 | Hasegawa, Gaku (1683) | Won 2-1 | +211543 |
| 5standard | 464 | Umi, Hirokazu (1491) | Won 2-0 | +171560 |
| 6standard | 107 | Ishida, Shoichi (1447) | Lost 1-2 | -201540 |
| 7standard | 586 | Gondo, Rin (1535) | Lost 1-2 | -181522 |
| 8standard | 694 | Yamamoto, Shouhei (1707) | Won 2-1 | +211543 |
| 9standard | 370 | Yuuya, Yoshihara (1549) | Won 2-0 | +181561 |
| top | average opponent: 1572record: 5-3 | new rating: 1561 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 314 | Shinmura, Kazuya (1464) | Won 2-1 | +171506 |
| 3legacy | 19 | Oota, Nobuyuki (1572) | Won 2-0 | +191525 |
| 4legacy | 263 | Higashimura, Kazuya (1578) | Won 2-1 | +191544 |
| 5legacy | 33 | Kato, Yuki7034 (1538) | Won 2-1 | +181562 |
| 6legacy | 6 | Nishimura, Tatsuya (1585) | Lost 1-2 | -171545 |
| 7legacy | 150 | Hirosawa, Yuuta (1963) | Lost 1-2 | -111534 |
| 8legacy | 245 | Sugita, Daichi (1663) | Won 2-0 | +201554 |
| 9legacy | 147 | Yoshimoto, Masanobu (1640) | Lost 0-2 | -161538 |
| 10legacy | 333 | Fukushima, Rei (1522) | Lost 0-2 | -191519 |
| top | average opponent: 1614record: 5-4 | new rating: 1519 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 378 | Ishikawa, Tomoyasu (1511) | Lost 0-2 | -171446 |
| 3standard | 1233 | Hayasi, Ryuji (1508) | Lost 1-2 | -171429 |
| 4standard | 1149 | Nakae, Syu (1499) | Won 2-0 | +191448 |
| 5standard | 1072 | Makuta, Eiji (1552) | Won 2-0 | +201468 |
| 6standard | 610 | Watabe, Jun (1517) | Won 2-0 | +191487 |
| 7standard | 347 | Hashimoto, Satoshi (1460) | Won 2-1 | +181505 |
| 8standard | 328 | Kabeya, Atsushi (1459) | Won 2-0 | +171522 |
| 9standard | 189 | Handa, Takuya (1530) | Lost 0-2 | -181504 |
| 10standard | 238 | Ikebata, Ryou (1651) | Lost 0-2 | -151489 |
| top | average opponent: 1521record: 5-4 | new rating: 1489 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1513 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 73 | Tan, Darren (1480) | Won 2-0 | +181531 |
| 2sealed | 317 | Kashiwase, Kazuya (1533) | Lost 0-2 | -181513 |
| 3sealed | 1060 | Hirashima, Yuutarou (1806) | Lost 1-2 | -131500 |
| 4sealed | 1051 | Sugimura, Masakazu (1486) | Lost 1-2 | -181482 |
| 5sealed | 1024 | Kanda, Shigeru (1440) | Lost 1-2 | -191463 |
| top | average opponent: 1549record: 1-4 | new rating: 1463 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 32 | Noguchi, Hiromasa (1394) | Lost 0-2 | -211514 |
| 2standard | 701 | Kuraishi, Yosiki (1482) | Won 2-0 | +181532 |
| 3standard | 686 | Albright, Beau (1604) | Lost 1-2 | -171515 |
| 4standard | 934 | Nishioka, Masataka (1464) | Won 2-0 | +171532 |
| 5standard | 631 | Nisthal, Daniel (1488) | Lost 0-2 | -191513 |
| top | average opponent: 1486record: 2-3 | new rating: 1513 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2288 | Ootsuki, Masahiro (1426) | Won 2-0 | +171517 |
| 2sealed | 2019 | Fujimoto, Keiji (1480) | Lost 0-2 | -191498 |
| 3sealed | 2226 | Ueno, Hiroshi (1485) | Lost 1-2 | -181480 |
| 4sealed | 2367 | Guimaraes, Bruno (1413) | Won 2-1 | +171497 |
| 5sealed | 2273 | Nakazawa, Yuuji (1508) | Won 2-1 | +181515 |
| 6sealed | 2211 | Akita, Naoto (1715) | Won 2-0 | +211536 |
| 7sealed | 2170 | Tomioka, Teppei (1525) | Won 2-0 | +181554 |
| 8sealed | 2053 | Saeki, Tomoya (1495) | Lost 0-2 | -191535 |
| top | average opponent: 1506record: 5-3 | new rating: 1535 | ||