Masuda, Kou
Current rating: 1496
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1518 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 120 | Gohara, Miyako (1500) | Won 2-0 | +181536 |
| 2standard | 194 | Murata, Kazuki (1417) | Won 2-1 | +151551 |
| 3standard | 23 | Fukui, Shunsuke (1483) | Lost 0-2 | -191532 |
| 4standard | 296 | Konno, Tomoaki (1518) | Lost 0-2 | -181514 |
| 5standard | 419 | Kadono, Takayuki (1539) | Lost 1-2 | -181496 |
| top | average opponent: 1491record: 2-3 | new rating: 1496 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 398 | N., Takaaki (1500) | Won 2-1 | +191497 |
| 2sealed | 136 | Date, Hiroshi (1592) | Lost 1-2 | -161481 |
| 3sealed | 233 | Ooshima, Kazuyasu (1501) | Won 2-1 | +181499 |
| 4sealed | 130 | Yamamoto, Takashi (1372) | Won 2-1 | +161515 |
| 5sealed | 175 | Mayaguchi, Masaru (1442) | Lost 0-2 | -201495 |
| 6sealed | 186 | Oikawa, Hakudou (1495) | Won 2-1 | +181513 |
| 7sealed | 100 | Fujimoto, Koji (1525) | Won 2-1 | +181531 |
| 8sealed | 233 | Oosaka, Yuusuke (1780) | Lost 0-2 | -131518 |
| top | average opponent: 1526record: 5-3 | new rating: 1518 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 120 | Tsutanaga, Yasunori (1500) | Draw 1-1 | 01500 |
| 2standard | 179 | Itou, Syuhei (1499) | Lost 1-2 | -181482 |
| 3standard | 257 | Nakamura, Kousuke (1374) | Won 2-0 | +161498 |
| 4standard | 248 | Ushima, Kousuke (1410) | Lost 1-2 | -201478 |
| top | average opponent: 1446record: 1-2-1 | new rating: 1478 | ||