Amagai, Masahiro
Current rating: 1344
Record: 10-20
| Grand Prix Yokohama 2019 (modern) | starting rating: 1372 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 704 | Sekiya, Hiroshi (1390) | Lost 0-2 | -181354 |
| 2modern | 634 | Aihara, Shogaku (1539) | Lost 1-2 | -151339 |
| 3modern | 1054 | Fujita, Toshitake (1471) | Won 2-1 | +211360 |
| 4modern | 915 | Sugiura, Hiroki (1483) | Lost 1-2 | -161344 |
| top | average opponent: 1471record: 1-3 | new rating: 1344 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 515 | Miotani, Tomoya (1640) | Lost 0-2 | -151434 |
| 2modern | 670 | Uchida, Seiya (1553) | Lost 1-2 | -151419 |
| 3modern | 1271 | Funabiki, Rintaro (1463) | Lost 1-2 | -181401 |
| 4modern | 1290 | Hamada, Daiki (1370) | Won 2-0 | +181419 |
| 5modern | 1117 | Kusakabe, Kyohei (1694) | Lost 1-2 | -131406 |
| 6modern | 1168 | Hiroshi, Kishida (1443) | Lost 0-2 | -181388 |
| 7modern | 1108 | Sugiyama, Kouichi (1372) | Lost 0-2 | -181370 |
| 8modern | 967 | Nakayuki, Takahiro (1409) | Lost 0-2 | -171353 |
| 9modern | 853 | Takahashi, Mario (1393) | Won 2-1 | +191372 |
| top | average opponent: 1482record: 2-7 | new rating: 1372 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 163 | Matsumura, Toshikazu (1573) | Lost 0-2 | -161445 |
| 2legacy | 674 | Andou, Koutarou (1635) | Lost 0-2 | -141431 |
| 3legacy | 1145 | Tutumi, Takuya (1338) | Won 2-1 | +161447 |
| 4legacy | 907 | Hamada, Kentaro (1485) | Won 2-0 | +191466 |
| 5legacy | 632 | Tomizawa, Shoudai (1536) | Lost 1-2 | -171449 |
| top | average opponent: 1513record: 2-3 | new rating: 1449 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 600 | Tanaka, Keita (1487) | Lost 0-2 | -191495 |
| 2standard | 1191 | Fujii, Mikiya (1479) | Lost 0-2 | -181477 |
| 3standard | 1544 | Futamata, Yojiro (1479) | Lost 1-2 | -181459 |
| 4standard | 1601 | Konno, Masashi (1578) | Lost 0-2 | -161443 |
| 5standard | 1542 | Itakura, Kenichi (1455) | Won 2-0 | +181461 |
| top | average opponent: 1495record: 1-4 | new rating: 1461 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1349 | Yasunori, Asai (1500) | Won 2-0 | +181518 |
| 2sealed | 1131 | Miura, Taku (1518) | Won 2-0 | +181536 |
| 3sealed | 1039 | Kubo, Yuta (1494) | Lost 0-2 | -191517 |
| 4sealed | 1142 | Fukui, Shunsuke (1547) | Lost 1-2 | -171500 |
| 5sealed | 1107 | Harada, Yoshio (1327) | Won 2-1 | +151515 |
| 6sealed | 1008 | Murai, Tatsuya6290 (1503) | Lost 0-2 | -191496 |
| 7sealed | 1033 | Tatara, Yuichi (1453) | Won 2-1 | +181514 |
| top | average opponent: 1477record: 4-3 | new rating: 1514 | ||