Yamazaki, Hiroki
Current rating: 1664
Record: 37-27-4
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1563 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 255 | Song, Malcolm (1518) | Won 2-1 | +171580 |
| 4standard | 226 | Yoshida, Kenji (1482) | Won 2-1 | +161596 |
| 5standard | 29 | Kim, Chang Kyum (1847) | Won 2-0 | +221618 |
| 6standard | 21 | Ebitani, Keisuke (1779) | Lost 1-2 | -151603 |
| 7standard | 65 | Sato, Naoki0360 (1509) | Won 2-1 | +171620 |
| 8standard | 89 | Ichikawa, Yuuki (1914) | Won 2-1 | +231643 |
| 9standard | 29 | Yashiro, Kazuki (1913) | Won 2-1 | +231666 |
| 10standard | 29 | Aizawa, Tamotsu (1601) | Won 2-1 | +161682 |
| 11standard | 14 | Sochurek, Petr (2058) | Lost 1-2 | -111671 |
| 12standard | 12 | Okada, Tomofumi (1802) | Lost 1-2 | -161655 |
| 13standard | 52 | Taniguchi, Hiroaki (1845) | Lost 1-2 | -141641 |
| 14standard | 109 | Takeda, Harunobu (1887) | Won 2-1 | +221663 |
| 15standard | 42 | Nakashima, Shunichi (1706) | Draw 1-1 | +11664 |
| top | average opponent: 1758record: 8-4-1 | new rating: 1664 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1589 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 344 | Noya, Hideaki (1500) | Won 2-0 | +161605 |
| 2extended | 53 | Utsumi, Takayuki (1517) | Lost 0-2 | -201585 |
| 3extended | 201 | Kojima, Toshihiro (1432) | Lost 0-2 | -201565 |
| 4extended | 456 | Matsumura, Keisuke (1484) | Won 2-1 | +161581 |
| 5extended | 343 | Kawamura, Kento (1550) | Lost 0-2 | -181563 |
| top | average opponent: 1496record: 2-3 | new rating: 1563 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1572 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 102 | Ichikawa, Yohei (1504) | Won 2-1 | +171589 |
| 2sealed | 15 | Sakaki, Takayoshi (1518) | Won 2-0 | +161605 |
| 3sealed | 1 | Koguchi, Yasuaki (1532) | Lost 0-2 | -191586 |
| 4sealed | 105 | Yagura, Hisayoshi (1531) | Won 2-1 | +171603 |
| 5sealed | 123 | Shimada, Masatake (1738) | Won 2-1 | +211624 |
| 6sealed | 55 | Hassaku, Jinpei (1779) | Lost 0-2 | -161608 |
| 7sealed | 93 | Tanaka, Fuminori (1508) | Lost 1-2 | -191589 |
| top | average opponent: 1587record: 4-3 | new rating: 1589 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 13 | Tomita, Kayoko (1401) | Won 2-0 | +151576 |
| 2extended | 14 | Aoki, Yuichiro (1517) | Won 2-1 | +171593 |
| 3extended | 28 | Shimada, Masatake (1749) | Lost 1-2 | -151578 |
| 4extended | 118 | Kuniyoshi, Yasuhiro (1502) | Lost 0-2 | -201558 |
| 5extended | 116 | Takahama, Norimasa (1518) | Won 2-1 | +181576 |
| 6extended | 65 | Takemoto, Takaaki (1504) | Won 2-1 | +161592 |
| 7extended | 46 | Furukawa, Tadataka (1463) | Lost 1-2 | -201572 |
| top | average opponent: 1522record: 4-3 | new rating: 1572 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1590 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 117 | Teshima, Hisanori (1428) | Lost 1-2 | -211569 |
| 2sealed | 267 | Matsuda, Yuuki (1482) | Lost 0-2 | -191550 |
| 3sealed | 284 | Ogata, Koki (1465) | Won 2-0 | +161566 |
| 4sealed | 215 | Takeda, Mayumi (1368) | Won 2-0 | +141580 |
| 5sealed | 141 | Haibara, Tomoki (1499) | Lost 1-2 | -191561 |
| top | average opponent: 1448record: 2-3 | new rating: 1561 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1585 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 1 | Ueno, Mitsuru (1469) | Won 2-0 | +161601 |
| 2block | 98 | Suezawa, Ryo (1518) | Draw 1-1 | -11600 |
| 3block | 86 | Miyata, Satoshi (1481) | Won 2-0 | +161616 |
| 4block | 53 | Kamei, Shunsuke (1534) | Lost 0-2 | -201596 |
| 5block | 93 | Morishita, Mizuki (1516) | Lost 0-2 | -191577 |
| 6block | 127 | Yamada, Kenji (1499) | Won 2-1 | +161593 |
| 7block | 91 | Satou, Tsubasa (1459) | Won 2-0 | +161609 |
| 8block | 93 | Tsushima, Yusuke (1565) | Lost 1-2 | -191590 |
| top | average opponent: 1505record: 4-3-1 | new rating: 1590 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1551 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 134 | Higuchi, Masaki (1447) | Won 2-0 | +161567 |
| 2sealed | 140 | Fuma, Masaharu (1531) | Won 2-0 | +171584 |
| 3sealed | 99 | Nagi, Izuru (1536) | Won 2-0 | +171601 |
| 4sealed | 17 | Sumita, Masanobu (1638) | Won 2-0 | +191620 |
| 5sealed | 16 | Yokoyama, Tadashi (1721) | Lost 1-2 | -161604 |
| 6sealed | 26 | Tsukamoto, Toshiki (1644) | Draw 1-1 | 01604 |
| 7sealed | 44 | Ouchi, Atsuo (1552) | Lost 0-2 | -191585 |
| top | average opponent: 1581record: 4-2-1 | new rating: 1585 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 438 | Yamaguchi, Hiroshi (1500) | Lost 0-2 | -191520 |
| 2block | 511 | Hirose, Keizo (1482) | Won 2-0 | +171537 |
| 3block | 481 | Maeda, Ryuichi (1499) | Won 2-0 | +181555 |
| 4block | 392 | Nishimoto, Takuya (1517) | Won 2-1 | +171572 |
| 5block | 173 | Shikata, Nobuaki (1613) | Won 2-1 | +191591 |
| 6block | 143 | Ishida, Atsushi (1505) | Draw 1-1 | -21589 |
| 7block | 99 | Kaneda, Yoshiyuki (1554) | Lost 1-2 | -181571 |
| 8block | 179 | Mochizuki, Yuki (1459) | Lost 0-2 | -201551 |
| top | average opponent: 1516record: 4-3-1 | new rating: 1551 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 85 | Kageyama, Tarou (1654) | Won 2-0 | +211521 |
| 2extended | 142 | Biwaki, Toshiaki (1553) | Won 2-1 | +181539 |
| 3extended | 19 | Murata, Kouji (1534) | Lost 1-2 | -181521 |
| 4extended | 117 | Umemiya, Tatsuya (1518) | Won 2-0 | +181539 |
| 5extended | 68 | Ogura, Ryou (1501) | Lost 0-2 | -181521 |
| 6extended | 150 | Izumiguchi, Tokiya (1520) | Lost 0-2 | -181503 |
| 7extended | 187 | Nakashima, Wataru (1517) | Won 2-0 | +181521 |
| 8extended | 142 | Suzuki, Mayumi (1521) | Won 2-0 | +181539 |
| top | average opponent: 1540record: 5-3 | new rating: 1539 | ||