Kumagae, Kousuke
Current rating: 1464
Record: 17-20-1
| Grand Prix Yokohama 2019 (modern) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 751 | Tokuda, Yasushi (1500) | Lost 1-2 | -171443 |
| 2modern | 728 | Takahashi, Hiroki (1477) | Won 2-1 | +181461 |
| 3modern | 563 | Matoba, Kosuke (1495) | Won 2-1 | +191480 |
| 4modern | 626 | Hatano, Kazaho (1463) | Lost 1-2 | -181462 |
| 5modern | 603 | Nawa, Hiroki (1379) | Won 2-1 | +161478 |
| 6modern | 407 | Namikawa, Katsuya (1676) | Lost 1-2 | -141464 |
| top | average opponent: 1498record: 3-3 | new rating: 1464 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 485 | Ishikawa, Masami (1576) | Lost 0-2 | -161438 |
| 2legacy | 465 | Takahashi, Hiroki (1477) | Won 2-1 | +191457 |
| 3legacy | 531 | Katoh, Wataru (1367) | Won 2-0 | +161473 |
| 4legacy | 417 | Hiraki, Takayoshi (1640) | Lost 0-2 | -151458 |
| 5legacy | 463 | Campbell, Chantelle (1571) | Lost 0-2 | -161442 |
| 6legacy | 452 | Umemura, Hideaki (1447) | Won 2-1 | +181460 |
| 7legacy | 396 | Tsuruta, Takurou (1526) | Lost 0-2 | -171443 |
| 8legacy | 363 | Guo, Jia Sin (1362) | Won 2-1 | +171460 |
| top | average opponent: 1496record: 4-4 | new rating: 1460 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1444 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 344 | Zhang, Xuan (1521) | Lost 1-2 | -161428 |
| 3standard | 1101 | Nomura, Takuma (1498) | Won 2-0 | +191447 |
| 4standard | 424 | Ieda, Toma (1521) | Won 2-1 | +191466 |
| 5standard | 363 | Yoshikawa, Yuta (1652) | Lost 1-2 | -141452 |
| 6standard | 425 | Suga, Junichi (1519) | Won 2-0 | +191471 |
| 7standard | 533 | Suzuki, Masaya (1405) | Won 2-1 | +171488 |
| 8standard | 280 | Hasebe, Sho (1571) | Lost 1-2 | -171471 |
| 9standard | 422 | Katou, Syouya (1503) | Lost 0-2 | -171454 |
| top | average opponent: 1524record: 4-4 | new rating: 1454 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 459 | Yoshida, Takefumi (1415) | Won 2-0 | +161551 |
| 4legacy | 20 | Hasegawa, Yu (1795) | Lost 1-2 | -141537 |
| 5legacy | 424 | Matsuo, Shuto (1468) | Lost 0-2 | -191518 |
| 6legacy | 657 | Tsuchiya, Yoshihito (1462) | Lost 1-2 | -191499 |
| 7legacy | 784 | Hangyo, Tatsuya (1490) | Lost 0-2 | -181481 |
| 8legacy | 711 | Nagae, Shuhei (1471) | Lost 0-2 | -181463 |
| 9legacy | 711 | Iwata, Sou (1441) | Lost 0-2 | -191444 |
| top | average opponent: 1506record: 1-6 | new rating: 1444 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 946 | Kurokawa, Shutaro (1483) | Lost 0-2 | -181482 |
| 2standard | 962 | Bass, Dan (1450) | Draw 1-1 | -11481 |
| 3standard | 1415 | Aizawa, Seiji (1407) | Won 2-0 | +171498 |
| 4standard | 1081 | Torii, Kouyu (1504) | Won 2-1 | +181516 |
| 5standard | 737 | Kishihara, Nobuaki (1505) | Lost 1-2 | -181498 |
| 6standard | 986 | Cheng, Yu Chun (1507) | Won 2-0 | +181516 |
| 7standard | 734 | Nomura, Tomohiro (1452) | Won 2-0 | +171533 |
| 8standard | 473 | Nakajima, Masanori (1593) | Won 2-0 | +191552 |
| 9standard | 307 | Kikuchi, Kouhei (1627) | Lost 0-2 | -171535 |
| top | average opponent: 1503record: 5-3-1 | new rating: 1535 | ||