Hamada, Masaki
Current rating: 1539
Record: 18-17-2
| Grand Prix Yokohama 2019 (modern) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 670 | Yamashita, Kohji (1195) | Won 2-0 | +121538 |
| 2modern | 401 | Ellis, Jordan (1516) | Won 2-1 | +181556 |
| 3modern | 468 | Naide, Kazutaka (1704) | Won 2-1 | +201576 |
| 4modern | 84 | Kimura, Shigeki (1664) | Lost 1-2 | -161560 |
| 5modern | 198 | Urabe, Ryosuke (1535) | Lost 1-2 | -181542 |
| 6modern | 699 | Okada, Koji (1438) | Won 2-0 | +161558 |
| 7modern | 238 | Takeuchi, Shunsuke (1530) | Lost 1-2 | -191539 |
| top | average opponent: 1512record: 4-3 | new rating: 1539 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 294 | Takami, Yuuta (1431) | Lost 0-0 | -191509 |
| 2sealed | 223 | Itou, Akira (1481) | Won 2-1 | +171526 |
| 3sealed | 171 | Osanai, Takashi (1497) | Won 2-0 | +181544 |
| 4sealed | 185 | Satou, Masataka (1466) | Won 2-1 | +161560 |
| 5sealed | 75 | Hanaoka, Toshifumi (1614) | Lost 1-2 | -171543 |
| 6sealed | 26 | Shimada, Hiroya (1587) | Lost 0-2 | -171526 |
| top | average opponent: 1513record: 3-3 | new rating: 1526 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 119 | Uttranuson, Watcharaphon (1500) | Lost 1-2 | -181478 |
| 2block | 284 | Yamamoto, Kazuhide (1483) | Won 2-0 | +191497 |
| 3block | 288 | Kaji, Tetsuya (1607) | Won 2-1 | +201517 |
| 4block | 110 | Kageyama, Kiyotomo (1669) | Won 2-0 | +201537 |
| 5block | 157 | Nagaoka, Takayuki (1790) | Lost 0-2 | -131524 |
| 6block | 146 | Nobushita, Jun (1550) | Won 2-0 | +181542 |
| 7block | 92 | Yanagi, Hiroki (1711) | Won 2-1 | +211563 |
| 8block | 54 | Yano, Kunihiro (1618) | Lost 1-2 | -171546 |
| 9block | 103 | Kikuchi, Yuuji (1546) | Lost 1-2 | -181528 |
| top | average opponent: 1608record: 5-4 | new rating: 1528 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 96 | Hasegawa, Gaku (1455) | Draw 1-1 | 01446 |
| 2sealed | 90 | Yokoyama, Mitsunori (1458) | Won 2-1 | +181464 |
| 3sealed | 55 | Kikkawa, Takayuki (1518) | Won 2-0 | +191483 |
| 4sealed | 53 | Sugiura, Kiyohiro (1458) | Won 2-0 | +181501 |
| 5sealed | 29 | Kataoka, Asami (1567) | Won 2-0 | +191520 |
| 6sealed | 15 | Mayuzumi, Shinichi (1606) | Lost 1-2 | -171503 |
| 7sealed | 89 | Nakano, Yoshitaka (1757) | Lost 1-2 | -131490 |
| 8sealed | 52 | Yamamoto, Shouhei (1859) | Draw 1-1 | +61496 |
| top | average opponent: 1585record: 4-2-2 | new rating: 1496 | ||
| Grand Prix Kitakyushu 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 52 | Mitoma, Koji (1500) | Lost 0-2 | -181482 |
| 2extended | 89 | Kanaike, Hiroyuki (1511) | Lost 1-2 | -171465 |
| 3extended | 110 | Ootsu, Ryou (1464) | Won 2-0 | +181483 |
| 4extended | 119 | Shoji, Kenta (1450) | Lost 1-2 | -191464 |
| 5extended | 110 | Kamei, Kazuhiko (1469) | Won 2-0 | +181482 |
| 6extended | 101 | Kadono, Takayuki (1452) | Lost 0-2 | -191463 |
| 7extended | 87 | Nakamura, Kenji (1476) | Lost 0-2 | -171446 |
| top | average opponent: 1475record: 2-5 | new rating: 1446 | ||