Ikeda, Akio
Current rating: 1521
Record: 33-29
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1560 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 88 | Abe, Hirofumi (1519) | Lost 1-2 | -191541 |
| 2standard | 264 | Sugawara, Yasuyuki (1479) | Lost 0-2 | -191522 |
| 3standard | 369 | Tsurifune, Takashi (1455) | Won 2-0 | +161538 |
| 4standard | 330 | Kaminaka, Takahiro (1567) | Lost 0-2 | -171521 |
| top | average opponent: 1505record: 1-3 | new rating: 1521 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1598 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 73 | Ogawa, Kazuki (1537) | Won 2-0 | +171615 |
| 3sealed | 85 | Nakamura, Hajime (1608) | Lost 1-2 | -181597 |
| 4sealed | 199 | Yamada, Yuma (1610) | Lost 0-2 | -181579 |
| 5sealed | 158 | Kawachi, Yusuke (1480) | Lost 0-2 | -191560 |
| top | average opponent: 1559record: 1-3 | new rating: 1560 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1629 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 69 | Akagi, Hiroyuki (1468) | Won 2-1 | +151644 |
| 3block | 86 | Nakajima, Gou (1547) | Lost 0-2 | -201624 |
| 4block | 225 | Hirai, Masumi (1492) | Lost 0-2 | -201604 |
| 5block | 238 | Akita, Naoto (1465) | Won 2-1 | +151619 |
| 6block | 124 | Jinbu, Yousuke (1469) | Lost 1-2 | -211598 |
| top | average opponent: 1488record: 2-3 | new rating: 1598 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1593 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 19 | Siao, G. Shung (1585) | Lost 0-2 | -181575 |
| 3standard | 273 | Suzuki, Taiki (1501) | Won 2-1 | +161591 |
| 4standard | 140 | French, Michael (1522) | Won 2-1 | +171608 |
| 5standard | 107 | Tsai, Chih-Chun (1613) | Won 2-1 | +181626 |
| 6standard | 46 | Taira, Shunichi (1504) | Won 2-0 | +161642 |
| 7standard | 218 | Takahashi, Yuta (1951) | Lost 0-2 | -131629 |
| 8standard | 1 | Murakami, Norichika (1711) | Won 2-0 | +201649 |
| 9standard | 149 | Fujii, Hajime (1531) | Lost 1-2 | -201629 |
| top | average opponent: 1615record: 5-3 | new rating: 1629 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1600 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 132 | Kasuga, Shohei (1434) | Won 2-1 | +151615 |
| 2block | 53 | Hirayama, Daisuke (1451) | Won 2-0 | +151630 |
| 3block | 25 | Miyajima, Yoshitaka (1658) | Won 2-0 | +191649 |
| 4block | 13 | Kugi, Takeshi (1462) | Lost 1-2 | -221627 |
| 5block | 85 | Iwata, Futoshi (1598) | Lost 0-2 | -181609 |
| 6block | 126 | Takeda, Hiroki (1715) | Lost 1-2 | -161593 |
| top | average opponent: 1553record: 3-3 | new rating: 1593 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1620 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 224 | Bando, Tomoyuki (1500) | Won 2-0 | +161636 |
| 2sealed | 102 | Shirakura, Tsuyoshi (1581) | Lost 1-2 | -191617 |
| 3sealed | 192 | Usami, Taro (1696) | Lost 1-2 | -171600 |
| top | average opponent: 1592record: 1-2 | new rating: 1600 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1578 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 231 | Yamada, Takashi (1500) | Won 2-0 | +171595 |
| 2standard | 153 | Omori, Kazuto (1506) | Won 2-1 | +161611 |
| 3standard | 100 | Takeshita, Masatoshi (1540) | Lost 1-2 | -191592 |
| 4standard | 140 | Shibuya, Takuma (1519) | Lost 0-2 | -191573 |
| 5standard | 345 | Mouri, Tomonori (1540) | Lost 1-2 | -191554 |
| 6standard | 310 | Nishimura, Masaaki (1419) | Won 2-1 | +161570 |
| 7standard | 252 | Uematsu, Kei (1464) | Won 2-0 | +161586 |
| 8standard | 155 | Sugiyama, Yuya (1633) | Won 2-0 | +191605 |
| 9standard | 110 | Okamura, Shinya (1459) | Won 2-0 | +151620 |
| top | average opponent: 1509record: 6-3 | new rating: 1620 | ||
| Grand Prix Sendai 2004 (DST limited) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 163 | Yusa, Sinnosuke (1500) | Lost 0-2 | -191547 |
| 2sealed | 172 | Sato, Makoto (1519) | Won 2-1 | +181565 |
| 3sealed | 114 | Miwa, Tatsuya (1596) | Lost 0-2 | -181547 |
| 4sealed | 187 | Katayose, Shingo (1519) | Lost 0-2 | -181529 |
| 5sealed | 190 | Yamamoto, Kazuaki (1481) | Won 2-0 | +171546 |
| 6sealed | 151 | Endo, Tadashi (1416) | Won 2-1 | +151561 |
| 7sealed | 119 | Takahashi, Keiji (1500) | Won 2-1 | +171578 |
| top | average opponent: 1504record: 4-3 | new rating: 1578 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 110 | Kobara, Shinji (1500) | Won 2-1 | +171550 |
| 2sealed | 151 | Tsujimoto, Hideki (1567) | Won 2-1 | +191569 |
| 3sealed | 4 | Mizutani, Naoki (1532) | Lost 1-2 | -191550 |
| 4sealed | 175 | Uchiyama, Masahiro (1517) | Won 2-0 | +171567 |
| 5sealed | 114 | Hasegawa, Gaku (1525) | Lost 1-2 | -181549 |
| 6sealed | 146 | Fujita, Keisuke (1538) | Won 2-0 | +171566 |
| 7sealed | 94 | Okutomi, Hiromitsu (1556) | Won 2-0 | +181584 |
| 8sealed | 57 | Sonoda, Naohiro (1587) | Lost 1-2 | -181566 |
| top | average opponent: 1540record: 5-3 | new rating: 1566 | ||
| Grand Prix Yokohama 2003 (Onslaught block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 119 | Kobayashi, Hajime (1385) | Lost 0-2 | -201480 |
| 2block | 295 | Komatsu, Toshiaki (1439) | Lost 1-2 | -191461 |
| 3block | 344 | Suzuki, Kazuaki (1464) | Lost 0-2 | -181443 |
| 4block | 381 | Okamoto, Nanato (1449) | Won 2-0 | +181461 |
| 5block | 338 | Hayakawa, Shinnosuke (1463) | Won 2-0 | +181479 |
| 6block | 295 | Hirota, Kiyokazu (1481) | Won 2-0 | +181497 |
| 7block | 185 | Sagawa, Yuuki (1488) | Won 2-0 | +181515 |
| 8block | 136 | Yazawa, Yasuhiro (1502) | Won 2-1 | +181533 |
| top | average opponent: 1459record: 5-3 | new rating: 1533 | ||