Matumura, Kyohei
Current rating: 1617
Record: 23-16
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1612 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 795 | Hatayama, Takaharu (1535) | Won 2-0 | +161628 |
| 2sealed | 482 | Kikuchi, Kouhei (1589) | Lost 1-2 | -181610 |
| 3sealed | 851 | Kimura, Yasuyuki (1497) | Lost 1-2 | -201590 |
| 4sealed | 919 | Odachi, Kentarou (1460) | Won 2-0 | +151605 |
| 5sealed | 758 | Wada, Takahide (1565) | Won 2-1 | +181623 |
| 6sealed | 635 | Nagaya, Seigou (1507) | Won 2-1 | +151638 |
| 7sealed | 260 | Kinoshita, Akira (1548) | Won 2-1 | +171655 |
| 8sealed | 296 | Satou, Akihiko (1637) | Lost 0-2 | -191636 |
| 9sealed | 306 | Ootsu, Takuya (1537) | Lost 1-2 | -191617 |
| top | average opponent: 1542record: 5-4 | new rating: 1617 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 656 | Ichikawa, Kenichi (1500) | Won 2-0 | +171578 |
| 2sealed | 706 | Furukawa, Takehito (1484) | Won 2-1 | +161594 |
| 3sealed | 801 | Ando, Takeru (1500) | Lost 1-2 | -191575 |
| 4sealed | 832 | Yoshioka, Ichita (1568) | Lost 0-2 | -181557 |
| 5sealed | 964 | Maeda, Gaku (1481) | Won 2-1 | +161573 |
| 6sealed | 815 | Kubo, Yuta (1442) | Won 2-0 | +161589 |
| 7sealed | 738 | Yaoita, Akihiro (1593) | Won 2-0 | +181607 |
| 8sealed | 697 | Tamada, Ryoichi (1971) | Lost 1-2 | -121595 |
| 9sealed | 720 | Uchino, Jun (1511) | Won 2-1 | +171612 |
| top | average opponent: 1561record: 6-3 | new rating: 1612 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 505 | Nagai, Masaya (1477) | Won 2-0 | +171599 |
| 2sealed | 661 | Nakayama, Takuya (1626) | Lost 0-2 | -181581 |
| 3sealed | 825 | Takaaki, Imai (1500) | Won 2-0 | +171598 |
| 4sealed | 614 | Suzuki, Mikito (1526) | Lost 0-2 | -201578 |
| 5sealed | 785 | Takimoto, Yusuke (1635) | Lost 0-2 | -171561 |
| top | average opponent: 1553record: 2-3 | new rating: 1561 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 119 | Hirata, Minoru (1563) | Won 2-1 | +191562 |
| 3standard | 58 | Nakazuka, Yuuki (1439) | Won 2-0 | +151577 |
| 4standard | 7 | Yasooka, Shota (1921) | Lost 0-2 | -121565 |
| 5standard | 140 | Noguchi, Yuichiro (1657) | Won 2-1 | +201585 |
| 6standard | 96 | Furutate, Mikihiko (1504) | Lost 1-2 | -191566 |
| 7standard | 37 | Udagawa, Hisashi (1503) | Won 2-1 | +161582 |
| 8standard | 206 | Kawakami, Hiroshi (1625) | Lost 0-2 | -171565 |
| 9standard | 100 | Sasaki, Yuusuke (Hyogo) (1526) | Won 2-1 | +171582 |
| top | average opponent: 1592record: 5-3 | new rating: 1582 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 191 | Takanashi, Kouji (1546) | Lost 1-2 | -171483 |
| 3standard | 212 | Kataoka, Asami (1566) | Won 2-1 | +191502 |
| 4standard | 222 | Takeda, Takamichi (1589) | Won 2-1 | +201522 |
| 5standard | 151 | Niimi, Kiyoaki (1637) | Won 2-1 | +201542 |
| 6standard | 61 | Harada, Toshiyuki (1520) | Lost 1-2 | -181524 |
| 7standard | 91 | Kanemasa, Hiroyuki (1542) | Won 2-0 | +181542 |
| 8standard | 65 | Matsushita, Masakazu (1722) | Lost 0-2 | -151527 |
| 9standard | 114 | Oohira, Kenta (1416) | Won 2-0 | +161543 |
| top | average opponent: 1567record: 5-3 | new rating: 1543 | ||