Kumagai, Hitoshi
Current rating: 1516
Record: 8-9-2
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1536 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 598 | Kishimoto, Nobuto (1500) | Won 2-0 | +181554 |
| 2legacy | 716 | Kim, Bo-young (1505) | Lost 0-2 | -191535 |
| 3legacy | 831 | Izumi, Masaru (1523) | Lost 1-2 | -191516 |
| 4legacy | 852 | Matsuoka, Naoto (1589) | Lost 1-2 | -161500 |
| 5legacy | 909 | Rippe, Dustin (1483) | Won 2-0 | +171517 |
| 6legacy | 852 | Yuasa, Kentarou (1602) | Lost 1-2 | -161501 |
| 7legacy | 803 | Kato, Kazuyuki (1382) | Won 2-1 | +161517 |
| 8legacy | 753 | Nishikawa, Tatsuya (Shiga) (1483) | Lost 0-2 | -191498 |
| 9legacy | 728 | Arai, Yuma (1469) | Won 2-1 | +181516 |
| average opponent: 1504record: 4-5 | new rating: 1516 | |||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 63 | Sugiyama, Kenji (1563) | Won 2-0 | +191519 |
| 5standard | 45 | Maekawa, Takuya (1512) | Won 2-1 | +181537 |
| 6standard | 18 | Yasooka, Shota (1879) | Lost 0-2 | -121525 |
| 7standard | 27 | Sakurai, Kenichi (1568) | Won 2-0 | +191544 |
| 8standard | 10 | Yoshimori, Sho (1735) | Won 2-1 | +211565 |
| 9standard | 7 | Kubota, Yuuhi (1930) | Draw 1-1 | +71572 |
| 10standard | 17 | Nakamura, Shuhei (1888) | Lost 0-2 | -131559 |
| 11standard | 38 | Saito, Tomoharu (1934) | Draw 1-1 | +71566 |
| 12standard | 43 | Ikeda, Tsuyoshi (1837) | Lost 1-2 | -131553 |
| 13standard | 51 | Kaminaka, Takahiro (1644) | Lost 0-2 | -171536 |
| average opponent: 1749record: 4-4-2 | new rating: 1536 | |||