Sato, Osamu
Current rating: 1485
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1524 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 38 | Yae, Hidetoshi (1432) | Lost 0-2 | -201504 |
| 2sealed | 376 | Nakamura, Satoshi2579 (1482) | Won 2-0 | +181522 |
| 3sealed | 396 | Matsushita, Takayuki (1565) | Lost 0-2 | -171505 |
| 4sealed | 503 | Andou, Daichi (1484) | Lost 0-2 | -191486 |
| 5sealed | 444 | Takamura, Kazuki (1463) | Lost 1-2 | -181468 |
| 6sealed | 387 | Lin, Yucheng (1423) | Won 2-0 | +171485 |
| top | average opponent: 1475record: 2-4 | new rating: 1485 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 773 | Horiguchi, Kenichi (1500) | Won 2-1 | +181522 |
| 2sealed | 709 | Nakayama, Masaki (1518) | Lost 1-2 | -181504 |
| 3sealed | 1030 | Mori, Kouki (1500) | Lost 0-2 | -191485 |
| 4sealed | 1116 | Miyagawa, Takahiro (1482) | Won 2-0 | +181503 |
| 5sealed | 901 | Matsuo, Akiyoshi (1557) | Won 2-1 | +191522 |
| 6sealed | 841 | Yamano, Tatsuto (1265) | Won 2-1 | +141536 |
| 7sealed | 866 | Horie, Yoshiaki (1473) | Won 2-0 | +171553 |
| 8sealed | 909 | Shimada, Masahiko (1652) | Won 2-0 | +191572 |
| 9sealed | 889 | I., Satoshi (1626) | Won 2-1 | +191591 |
| 10sealed | 50 | Hori, Daisuke (1647) | Lost 1-2 | -171574 |
| 11sealed | 105 | Sekiguchi, Kota (1562) | Won 2-0 | +181592 |
| 12draft | 119 | Kikuchi, Satoru (1717) | Lost 0-2 | -161576 |
| 13draft | 116 | Kanazawa, Takuya (1579) | Lost 1-2 | -171559 |
| 14draft | 88 | Yamauchi, Kazushi (1500) | Lost 0-2 | -201539 |
| 15draft | 71 | Saitou, Keiichirou (1670) | Lost 0-2 | -151524 |
| top | average opponent: 1550record: 8-7 | new rating: 1524 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 248 | Motoyanagi, Youhei (1500) | Won 2-0 | +181518 |
| 2sealed | 61 | Sakai, Yuuto (1507) | Won 2-1 | +181536 |
| 3sealed | 11 | Juumonji, Ryou (1689) | Lost 1-2 | -151521 |
| 4sealed | 96 | Kurakami, Shun (1730) | Won 2-1 | +211542 |
| 5sealed | 143 | Takayama, Ryou (1451) | Lost 1-2 | -191523 |
| 6sealed | 118 | Iino, Ryuji (1468) | Lost 0-2 | -191504 |
| top | average opponent: 1557record: 3-3 | new rating: 1504 | ||