Matumura, Toshimi
Current rating: 1428
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 1028 | Coleman, William (1500) | Won 2-0 | +191453 |
| 2standard | 585 | Nakaso, Kouji (1603) | Lost 0-2 | -161437 |
| 3standard | 1131 | Sablan, Ant (1498) | Lost 0-2 | -161421 |
| 4standard | 1195 | Oda, Shinya (1509) | Won 2-0 | +191440 |
| 5standard | 1219 | Uno, Yuki (1556) | Won 2-0 | +201460 |
| 6standard | 828 | Aoyama, Katsuhiko (1635) | Lost 0-2 | -151445 |
| 7standard | 1010 | Komatsu, Satoru (1450) | Lost 1-2 | -171428 |
| top | average opponent: 1536record: 3-4 | new rating: 1428 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1449 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 753 | Hiraoka, Yuto (1500) | Won 1-0 | +191468 |
| 2standard | 19 | Yamaguchi, Yuuichi (1557) | Won 2-0 | +201488 |
| 3standard | 307 | Hangyo, Tatsuya (1498) | Lost 1-2 | -181470 |
| 4standard | 374 | Sato, Yuuki (1427) | Lost 0-2 | -191451 |
| 5standard | 942 | Bae, Sanghoon (1479) | Lost 1-2 | -171434 |
| top | average opponent: 1492record: 2-3 | new rating: 1434 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 57 | Kameyama, Daisuke (1500) | Lost 0-2 | -181482 |
| 2standard | 387 | Hashizume, Yuuya (1658) | Lost 1-2 | -151467 |
| 3standard | 510 | Kitakaze, Asuka (1462) | Lost 1-2 | -181449 |
| top | average opponent: 1540record: 0-3 | new rating: 1449 | ||