Hiraoka, Toshiaki
Current rating: 1549
Record: 18-15
| Grand Prix Okayama 2004 (extended) | starting rating: 1571 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 89 | Sibata, Masaki (1500) | Won 2-0 | +171588 |
| 2extended | 96 | Himura, Makoto (1578) | Lost 0-2 | -181570 |
| 3extended | 134 | Katayama, Koujun (1484) | Won 1-0 | +161586 |
| 4extended | 112 | Yaoita, Akihiro (1575) | Lost 1-2 | -181568 |
| 5extended | 118 | Kawasaki, Kousuke (1500) | Lost 1-2 | -191549 |
| top | average opponent: 1528record: 2-3 | new rating: 1549 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1543 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 66 | Eura, Hiroki (1460) | Won 2-1 | +171560 |
| 2block | 77 | Harada, Masahiro (1577) | Won 2-0 | +181578 |
| 3block | 62 | Imai, Kimio (1467) | Lost 1-2 | -201558 |
| 4block | 132 | Sato, Hidetaka (1518) | Won 2-1 | +171575 |
| 5block | 63 | Nakatani, Haruki (1516) | Won 2-0 | +171592 |
| 6block | 52 | Hara, Yuya (1540) | Won 2-0 | +171609 |
| 7block | 31 | Murase, Yukiyoshi (1539) | Lost 0-2 | -191590 |
| 8block | 52 | Kimura, Kazuo (1560) | Lost 1-2 | -191571 |
| top | average opponent: 1522record: 5-3 | new rating: 1571 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 218 | Oosaki, Masakazu (1500) | Won 2-1 | +181504 |
| 2block | 306 | Nonaka, Kentarou (1500) | Won 1-0 | +181522 |
| 3block | 29 | Hatta, Tetsuya (1538) | Won 2-1 | +181540 |
| 4block | 34 | Hamasaki, Masamitsu (1553) | Lost 1-2 | -171523 |
| 5block | 137 | Fujisawa, Takuya (1535) | Won 2-0 | +181541 |
| 6block | 56 | Matsumoto, Yoshitaka (1554) | Won 2-0 | +181559 |
| 7block | 29 | Tsukamoto, Toshiki (1670) | Won 2-1 | +201579 |
| 8block | 23 | Morita, Yuki (1571) | Lost 0-2 | -181561 |
| 9block | 65 | Ikeda, Takashi (1572) | Lost 0-2 | -181543 |
| top | average opponent: 1555record: 6-3 | new rating: 1543 | ||
| Grand Prix Hiroshima 2001 (INV limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 15 | Harada, Toshiyuki (1500) | Won 2-0 | +181518 |
| 2sealed | 68 | Morihiro, Takayuki (1518) | Lost 0-2 | -181500 |
| 3sealed | 150 | Fujii, Masashi (1500) | Won 2-1 | +181518 |
| 4sealed | 70 | Okuyama, Masahide (1518) | Won 2-0 | +181536 |
| 5sealed | 63 | Kawase, Shuji (1535) | Won 2-0 | +181554 |
| 6sealed | 24 | Tsuru, Kazuhiro (1553) | Won 2-0 | +181572 |
| 7sealed | 26 | Nakajima, Jun-Ichi (1571) | ID | 01572 |
| 8draft | 20 | Komiya, Tadayoshi (1574) | Lost 1-2 | -181554 |
| 9draft | 27 | Yamagishi, Hajime (1582) | Lost 0-2 | -171537 |
| 10draft | 30 | Maruyama, Tomohiro (1673) | Lost 1-2 | -161521 |
| 11draft | 31 | Morihiro, Takayuki (1519) | Lost 0-2 | -181503 |
| 12draft | 31 | Kise, Masato (1562) | Lost 0-2 | -171486 |
| top | average opponent: 1550record: 5-6-1 | new rating: 1486 | ||