Tamura, Jun
Current rating: 1510
Record: 6-6-1
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 372 | Asahina, Taku (1500) | Lost 0-2 | -181478 |
| 2sealed | 316 | Kawano, Hiroki (1399) | Draw 1-1 | -11477 |
| 3sealed | 421 | Komachi, Akinori (1481) | Lost 1-2 | -181459 |
| 4sealed | 464 | Kobayashi, Yutarou (1461) | Won 2-0 | +181477 |
| 5sealed | 384 | Nishikori, Kouji (1357) | Won 2-1 | +161493 |
| 6sealed | 299 | Kashiwagi, Junichi (1464) | Won 2-0 | +171510 |
| average opponent: 1444record: 3-2-1 | new rating: 1510 | |||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 309 | Kunisato, Ebie (1663) | Won 2-0 | +211521 |
| 2extended | 142 | Sugisawa, Tsuyoshi (1570) | Won 2-1 | +191540 |
| 3extended | 118 | Tanabe, Atsushi (1502) | Won 2-1 | +171557 |
| 4extended | 55 | Ikeda, Tsuyoshi (1962) | Lost 1-2 | -111546 |
| 5extended | 187 | Nakano, Yoshitaka (1886) | Lost 1-2 | -121534 |
| 6extended | 193 | Okimura, Yosuke (1519) | Lost 1-2 | -181516 |
| 7extended | 218 | Tsurifune, Takashi (1434) | Lost 1-2 | -201496 |
| average opponent: 1648record: 3-4 | new rating: 1496 | |||