Kobayashi, Masahiro
Current rating: 1356
Record: 10-21-1
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1359 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 561 | Ishii, Taiyo (1527) | Won 2-0 | +211380 |
| 2sealed | 173 | Yu, Hanyang (1744) | Lost 1-2 | -121368 |
| 3sealed | 679 | Miura, Kazuki (1462) | Lost 1-2 | -161352 |
| 4sealed | 963 | Taniwaki, Kazuhito (1467) | Won 2-0 | +201372 |
| 5sealed | 568 | Kubota, Taiga (1484) | Lost 1-2 | -161356 |
| top | average opponent: 1537record: 2-3 | new rating: 1356 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1359 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 503 | Azuma, Nobuaki (1505) | Lost 0-2 | -161343 |
| 2sealed | 766 | Koiwa, Daijiro (1484) | Won 2-1 | +211364 |
| 3sealed | 979 | Fujiya, Takahiro (1588) | Won 2-0 | +221386 |
| 4sealed | 571 | Kawano, Junichi (1657) | Lost 1-2 | -131373 |
| 5sealed | 620 | Tedori, Kota (1604) | Lost 1-2 | -141359 |
| top | average opponent: 1568record: 2-3 | new rating: 1359 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1423 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 60 | Kimoto, Keiya (1426) | Lost 0-2 | -181405 |
| 2legacy | 709 | Ishimaru, Naoki (1482) | Lost 1-2 | -171388 |
| 3legacy | 1033 | Peil, Shannon (1465) | Lost 0-2 | -161372 |
| 4legacy | 1126 | Watanabe, Ryouta3802 (1446) | Lost 1-2 | -171355 |
| 5legacy | 1122 | Satou, Yusuke9918 (1429) | Lost 0-2 | -161339 |
| 6legacy | 1079 | Takahashi, Akira (1376) | Lost 0-2 | -181321 |
| 8legacy | 880 | Mochizuki, Katsuhiko (1304) | Won 2-0 | +181339 |
| 9legacy | 766 | Takeuchi, Hayato (1429) | Won 2-0 | +201359 |
| top | average opponent: 1420record: 2-6 | new rating: 1359 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 991 | Kase, Tomohiro (1412) | Won 2-1 | +171463 |
| 2standard | 141 | Furukawa, Shun (1518) | Lost 0-2 | -171446 |
| 3standard | 952 | Ogino, Junpei (1551) | Lost 1-2 | -161430 |
| 4standard | 1194 | Akamine, Yuta (1482) | Won 2-1 | +191449 |
| 5standard | 1003 | Takao, Shota (1899) | Won 2-1 | +261475 |
| 6standard | 841 | Okumura, Masashi (1497) | Lost 0-2 | -181457 |
| 7standard | 862 | Takaishi, Shogo (1499) | Draw 1-1 | +11458 |
| 8standard | 892 | Shibata, Toru (1468) | Lost 0-2 | -181440 |
| 9standard | 827 | Honma, Rie (1497) | Lost 0-2 | -171423 |
| top | average opponent: 1536record: 3-5-1 | new rating: 1423 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2343 | Hakamata, Shou (1514) | Lost 1-2 | -181482 |
| 2sealed | 2334 | Miki, Kazuhiro (1482) | Won 2-1 | +181500 |
| 3sealed | 2394 | Takamoto, Yuta (1498) | Lost 1-2 | -181482 |
| 4sealed | 2396 | Kamiharai, Toshihito (1484) | Lost 0-2 | -181464 |
| 5sealed | 2355 | Umezu, Kazunobu (1433) | Lost 0-2 | -181446 |
| top | average opponent: 1482record: 1-4 | new rating: 1446 | ||