Aki, Yasutoshi
Current rating: 1570
Record: 36-31-1
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1550 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 41 | Kawaguchi, Kyouhei (1523) | Lost 1-2 | -191531 |
| 2standard | 256 | Amayasu, Kazunori (1430) | Won 2-1 | +161547 |
| 3standard | 145 | Kawashima, Yuki (1540) | Won 2-1 | +181565 |
| 4standard | 198 | Urata, Takurou (1541) | Lost 1-2 | -181547 |
| 5standard | 236 | Tsuchiya, Hideaki (1654) | Won 2-0 | +201567 |
| 6standard | 137 | Aka, Shunsuke (1787) | Won 2-0 | +221589 |
| 7standard | 86 | Kaneko, Takanori (1555) | Lost 0-2 | -191570 |
| top | average opponent: 1576record: 4-3 | new rating: 1570 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1558 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 98 | U, Kashin (1405) | Lost 1-2 | -211537 |
| 2extended | 187 | Nagami, Youichi (1427) | Won 2-0 | +161553 |
| 3extended | 224 | Koretomo, Yuji (1480) | Lost 1-2 | -191534 |
| 4extended | 241 | Masuyama, Takuya (1434) | Won 2-0 | +161550 |
| 5extended | 166 | Hayata, Akira (1577) | Won 2-0 | +191569 |
| 6extended | 108 | Itou, Kouei (1505) | Lost 1-2 | -191550 |
| top | average opponent: 1471record: 3-3 | new rating: 1550 | ||
| Grand Prix Kitakyushu 2007 (LRW limited) | starting rating: 1582 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 75 | Okamura, Kazuya (1462) | Lost 0-2 | -201562 |
| 2sealed | 139 | Akimoto, Yasuhide (1482) | Won 2-0 | +161578 |
| 3sealed | 58 | Matsushita, Tomoyuki (1471) | Lost 0-2 | -201558 |
| top | average opponent: 1472record: 1-2 | new rating: 1558 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1625 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 16 | Yamasaki, Toshihiro (1426) | Lost 1-2 | -221603 |
| 2extended | 106 | Ashida, Jun (1499) | Won 2-1 | +161619 |
| 3extended | 86 | Osawa, Takuya (1664) | Lost 1-2 | -171602 |
| 4extended | 155 | Sakata, Norifumi (1482) | Lost 0-2 | -201582 |
| top | average opponent: 1518record: 1-3 | new rating: 1582 | ||
| Grand Prix Kyoto 2003 (LGN limited) | starting rating: 1636 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 94 | Kojima, Yoshimasa (1539) | Won 2-0 | +161652 |
| 3sealed | 78 | Hasegawa, Taro (1599) | Won 2-0 | +171669 |
| 4sealed | 26 | Nakamura, Satoshi (1606) | Lost 1-2 | -191650 |
| 5sealed | 40 | Inoue, Wataru (1536) | Won 2-0 | +161666 |
| 6sealed | 64 | Tajimi, Yuki (1537) | Lost 0-2 | -201646 |
| 7sealed | 79 | Hayashi, Yuki (1465) | Lost 0-2 | -211625 |
| top | average opponent: 1547record: 3-3 | new rating: 1625 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1615 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 109 | Furukawa, Tadataka (1415) | Lost 1-2 | -211594 |
| 2extended | 109 | Sasaki, Takeshi (1553) | Won 2-1 | +171611 |
| 3extended | 143 | Ikezaki, Yutaro (1499) | Lost 0-2 | -201591 |
| 4extended | 176 | Maruyama, Kentarou (1483) | Won 2-0 | +161607 |
| 5extended | 112 | Okazaki, Hideki (1461) | Won 2-1 | +151622 |
| 6extended | 109 | Furukawa, Takayuki 4606 (1518) | Won 2-1 | +161638 |
| 7extended | 51 | Omori, Tomoaki (1585) | Won 2-1 | +171655 |
| 8extended | 47 | Maeba, Hideaki (1584) | Lost 0-2 | -191636 |
| top | average opponent: 1512record: 5-3 | new rating: 1636 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 77 | Suzuki, Susumu (1500) | Won 2-0 | +181488 |
| 2sealed | 22 | Murakami, Norichika (1507) | Won 2-1 | +181506 |
| 3sealed | 22 | Mitsuya, Kazuhiko (1802) | Lost 1-2 | -121494 |
| 4sealed | 76 | Haibara, Tomoki (1517) | Won 2-0 | +181512 |
| 5sealed | 84 | Okawa, Yusuke (1564) | Won 2-0 | +191531 |
| 6sealed | 37 | Yamamoto, Keitaro (1564) | Won 2-1 | +191550 |
| 7sealed | 20 | Miyagi, Akira (1591) | Won 2-0 | +181568 |
| 8sealed | 5 | Takakuwa, Akihiro (1680) | ID | 01568 |
| 9rochester | 20 | Sato, Hitoshi (1621) | Won 2-0 | +191587 |
| 10rochester | 11 | Rikuno, Keito (1631) | Lost 0-2 | -171570 |
| 11rochester | 19 | Matsuzuki, Kyosuke (1700) | Won 2-1 | +211591 |
| 12rochester | 12 | Nakajima, Chikara (1640) | Lost 0-2 | -181573 |
| 13rochester | 26 | Hirabayashi, Kazuya (1768) | Won 2-0 | +221595 |
| 14rochester | 15 | Momose, Kazuyuki (1724) | Won 2-1 | +201615 |
| top | average opponent: 1629record: 10-3-1 | new rating: 1615 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 155 | Katano, Satoshi (1446) | Won 2-1 | +181503 |
| 2block | 49 | Kudo, Daisuke (1517) | Won 2-1 | +181521 |
| 3block | 29 | Shinozaki, Yuu (1593) | Lost 1-2 | -171504 |
| 4block | 117 | Nakamura, Tomoya (1564) | Lost 1-2 | -171487 |
| 5block | 110 | Yamaguchi, Takayuki (1498) | Lost 1-2 | -171470 |
| top | average opponent: 1524record: 2-3 | new rating: 1470 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Miura, Tadayuki (1500) | Lost 0-2 | -181466 |
| 2sealed | 154 | Kawasaki, Daisuke (1500) | Won 2-1 | +191485 |
| 3sealed | 151 | Cho, Shinichiro (1550) | Lost 1-2 | -171468 |
| 4sealed | 169 | Fukushima, Hirotomo (1449) | Won 2-1 | +171485 |
| 5sealed | 140 | Kinoshita, Junichi (1578) | Won 2-1 | +201505 |
| 6sealed | 100 | Kishishita, Kunihiko (1417) | Lost 1-2 | -201485 |
| top | average opponent: 1499record: 3-3 | new rating: 1485 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 20 | Sakai, Shunichi (1500) | Lost 0-2 | -181464 |
| 2extended | 123 | Matsutake, Hideyuki (1482) | Won 2-0 | +191483 |
| 3extended | 111 | Yamada, Yoshinori (1499) | Won 2-0 | +181501 |
| 4extended | 105 | Ogura, Taku (1519) | Lost 0-2 | -181483 |
| 5extended | 147 | Otake, Naoki (1501) | Draw 1-1 | +11484 |
| top | average opponent: 1500record: 2-2-1 | new rating: 1484 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 237 | Suzuki, Hiaki (1500) | Won 2-0 | +181518 |
| 2sealed | 126 | Kubota, Toru (1518) | Lost 0-2 | -181500 |
| 3sealed | 195 | Iwakura, Tatsuro (1501) | Lost 0-1 | -181482 |
| 4sealed | 235 | Tajima, Kenji (1480) | Won 2-1 | +181500 |
| 5sealed | 170 | Makita, Kazeto (1501) | Lost 1-2 | -181482 |
| top | average opponent: 1500record: 2-3 | new rating: 1482 | ||