Iioka, Kenta
Current rating: 1372
Record: 48-64-2
Grand Prix Kobe 2001Grand Prix Shizuoka 2001Grand Prix Sendai 2001Grand Prix Fukuoka 2002Grand Prix Taipei 2002Grand Prix Sapporo 2002Grand Prix Utsunomiya 2002Grand Prix Hiroshima 2003Grand Prix Shizuoka 2003Grand Prix Yokohama 2004Grand Prix Niigata 2005Grand Prix Taipei 2005Grand Prix Yamagata 2006Grand Prix Kyoto 2007Grand Prix Yokohama 2013
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 220 | Kinebuchi, Shouta (1500) | Won 2-1 | +201429 |
| 2sealed | 153 | Sekiguchi, Ichiki (1542) | Lost 0-2 | -161413 |
| 3sealed | 246 | Pang, Kelvin (1619) | Lost 0-2 | -141399 |
| 4sealed | 347 | Ootake, Takafumi (1524) | Lost 0-2 | -161383 |
| 5sealed | 420 | Hama, Kirito (1416) | Lost 0-2 | -181365 |
| 6sealed | 356 | Kuroda, Genki (1446) | Won 2-1 | +201385 |
| 7sealed | 287 | Yoshii, Akimi (1460) | Lost 1-2 | -171368 |
| 8sealed | 358 | Kanazawa, Yuusuke (1509) | Lost 0-2 | -151353 |
| 9sealed | 363 | Nakamura, Shou (1427) | Won 2-1 | +191372 |
| top | average opponent: 1494record: 3-6 | new rating: 1372 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1416 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 230 | Tabata, Hiroshi (1500) | Lost 1-2 | -161400 |
| 2standard | 244 | Doi, Fumiaki (1509) | Lost 0-2 | -161384 |
| 3standard | 348 | Hondou, Shin ya (1465) | Lost 0-2 | -171367 |
| 4standard | 378 | Tatsumi, Yasukazu (1495) | Lost 1-2 | -151352 |
| 5standard | 346 | Tsuneda, Masatoshi (1430) | Won 2-0 | +191371 |
| 6standard | 300 | Kobayashi, Hiroaki (1446) | Won 2-0 | +191390 |
| 7standard | 239 | Honda, Masaya (1427) | Won 2-1 | +191409 |
| top | average opponent: 1467record: 3-4 | new rating: 1409 | ||
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1398 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Matsushita, Masakazu (1655) | Won 2-0 | +221420 |
| 2sealed | 60 | Kurihara, Tomo (1632) | Lost 0-2 | -141406 |
| 3sealed | 62 | Murata, Daisuke (1526) | Lost 0-2 | -161390 |
| 4sealed | 119 | Motegi, Kennosuke (1462) | Won 2-1 | +201410 |
| 5sealed | 109 | Saitou, Tomokuni (1500) | Won 2-0 | +191429 |
| 6sealed | 85 | Kaida, Hiroshi (1603) | Lost 0-2 | -151414 |
| 7sealed | 77 | Eguchi, Hiroshi (1480) | Won 2-0 | +201434 |
| 8sealed | 66 | Fuji, Yuusuke (1469) | Lost 1-2 | -181416 |
| top | average opponent: 1541record: 4-4 | new rating: 1416 | ||
| Grand Prix Taipei 2005 (Kamigawa block) | starting rating: 1367 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 3 | Jan, Hard Bitten (1500) | Lost 0-2 | -151352 |
| 2block | 86 | Guo, Chi Hsen (1563) | Won 2-1 | +221374 |
| 3block | 67 | Lee, Min Hyuk (1500) | Won 2-0 | +201394 |
| 4block | 60 | Lee, Yi-Ping (1485) | Lost 1-2 | -161378 |
| 5block | 96 | chou, sung-ching (1499) | Won 2-1 | +201398 |
| top | average opponent: 1510record: 3-2 | new rating: 1398 | ||
| Grand Prix Niigata 2005 (Kamigawa block) | starting rating: 1340 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 64 | Yoshino, Takeaki (1500) | Won 2-0 | +211361 |
| 2block | 118 | Tanaka, Tomonori (1514) | Won 2-0 | +211382 |
| 3block | 28 | Anazawa, Yoshikazu (1684) | Won 2-0 | +231405 |
| 4block | 3 | Nakajima, Chikara (1688) | Won 2-0 | +231428 |
| 5block | 5 | Kitaoka, Takaaki (1518) | Lost 0-2 | -161412 |
| 6block | 50 | Terada, Tadashi (1593) | Lost 1-2 | -151397 |
| 7block | 100 | Itagaki, Masayoshi (1548) | Lost 1-2 | -151382 |
| 8block | 88 | Honnami, Tomoyuki (1581) | Lost 0-2 | -151367 |
| top | average opponent: 1578record: 4-4 | new rating: 1367 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1399 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 212 | Hatano, Akira (1500) | Lost 1-2 | -161383 |
| 2sealed | 201 | Kitazawa, Kiyohiro (1532) | Lost 0-2 | -151368 |
| 3sealed | 276 | Sakurai, Yuusuke (1463) | Won 2-1 | +191387 |
| 4sealed | 222 | Ishikka, Takehiro (1601) | Lost 1-2 | -141373 |
| 5sealed | 224 | Sekizawa, Takayuki (1480) | Lost 1-2 | -161357 |
| 6sealed | 197 | Katsumata, Chihiro (1412) | Lost 1-2 | -171340 |
| top | average opponent: 1498record: 1-5 | new rating: 1340 | ||
| Grand Prix Shizuoka 2003 (MRD limited) | starting rating: 1340 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 216 | Yamazaki, Hiroyuki(Fukushima (1482) | Lost 1-2 | -161324 |
| 2sealed | 249 | Fujino, Satoshi (1481) | Won 2-0 | +211345 |
| 3sealed | 217 | Kurisu, Takashi (1590) | Won 2-0 | +231368 |
| 4sealed | 80 | Mitsui, Hideo (1493) | Lost 0-2 | -161352 |
| 5sealed | 181 | Furukawa, Ken'ichi (1510) | Lost 0-2 | -151337 |
| 6sealed | 181 | Takeuchi, Hidehito (1493) | Won 2-1 | +211358 |
| 7sealed | 125 | Nishihara, Hiroki (1504) | Won 2-1 | +201378 |
| 8sealed | 92 | Kagamihata, Atsushi (1541) | Won 2-0 | +211399 |
| top | average opponent: 1512record: 5-3 | new rating: 1399 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1360 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 64 | Tanikawa, Itaru (1454) | Won 2-1 | +191379 |
| 2extended | 85 | Kuniyoshi, Yasuhiro (1500) | Lost 1-2 | -151364 |
| 3extended | 112 | Imagawa, Hiromasa (1477) | Lost 0-2 | -161348 |
| 4extended | 156 | Ito, Mitsuru (1482) | Won 2-1 | +201368 |
| 5extended | 104 | Yamabe, Hiroya (1498) | Lost 0-2 | -151353 |
| 6extended | 135 | Furukawa, Hiroki (1483) | Lost 0-2 | -161337 |
| 7extended | 121 | Kanazawa, Naoko (1369) | Lost 0-2 | -181319 |
| 8extended | 105 | Igarashi, Ryouto (1446) | Won 2-0 | +211340 |
| top | average opponent: 1464record: 3-5 | new rating: 1340 | ||
| Grand Prix Utsunomiya 2002 (ONS rochester) | starting rating: 1381 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 155 | Tsuda, Junichi (1446) | Won 2-0 | +201401 |
| 2sealed | 11 | Matsuyama, Tomofumi (1495) | Lost 0-2 | -171384 |
| 3sealed | 156 | Aoki, Takahiro (1501) | Lost 0-2 | -161368 |
| 4sealed | 269 | Yuki, Kensuke (1481) | Won 2-1 | +201388 |
| 5sealed | 169 | Kobayashi, Hajime (1452) | Won 2-1 | +201408 |
| 6sealed | 144 | Kinoshita, Masashi (1535) | Lost 1-2 | -161392 |
| 7sealed | 143 | Kataoka, Tatsuya (1499) | Lost 0-2 | -161376 |
| 8sealed | 42 | Koyano, Hirofumi (1481) | Lost 0-2 | -161360 |
| top | average opponent: 1486record: 3-5 | new rating: 1360 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 96 | Kudo, Daisuke (1500) | Lost 0-2 | -171429 |
| 2block | 168 | Asabayashi, Teppei (1483) | Lost 0-2 | -171412 |
| 3block | 197 | Shimoya, Hiroyuki (1463) | Won 2-0 | +191431 |
| 4block | 150 | Inaba, Keita (1482) | Lost 0-2 | -171414 |
| 5block | 184 | Kawamura, Takaki (1463) | Lost 0-2 | -171397 |
| 6block | 168 | Kondo, Yosuke (1455) | Lost 0-2 | -171380 |
| 7block | 146 | Maruyama, Takayuki (1427) | Won 2-0 | +191399 |
| 8block | 15 | Takamori, Atsushi (1446) | Lost 0-2 | -181381 |
| top | average opponent: 1465record: 2-6 | new rating: 1381 | ||
| Grand Prix Taipei 2002 (JUD standard) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 57 | Young, Paul (1500) | Draw 1-1 | 01482 |
| 2standard | 45 | Wu, Bh Yuan Ding (1500) | Won 2-1 | +181500 |
| 3standard | 38 | Hong, Hao Ting (1394) | Lost 0-2 | -201480 |
| 4standard | 71 | Sher, Andy (1500) | Lost 1-2 | -171463 |
| 5standard | 82 | Chen, Wei Ben (1482) | Lost 0-2 | -181445 |
| 6standard | 86 | Chiang, David Yung Lia (1464) | Won 2-0 | +191464 |
| 7standard | 71 | Chen, Jin Yo (1481) | Lost 1-2 | -181446 |
| top | average opponent: 1474record: 2-4-1 | new rating: 1446 | ||
| Grand Prix Fukuoka 2002 (TOR limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 101 | Nakashima, Takashi (1500) | Won 2-0 | +181516 |
| 2sealed | 13 | Maemoto, Shota (1519) | Won 2-0 | +191535 |
| 3sealed | 12 | Otsubo, Yuji (1639) | Lost 0-2 | -171518 |
| 4sealed | 86 | Murakami, Yuki (Osaka) (1545) | Lost 0-2 | -171501 |
| 5sealed | 103 | Yoshida, Mitsutaka (1338) | Won 2-0 | +151516 |
| 6sealed | 111 | Kobayashi, Masanori (1613) | Lost 0-2 | -161500 |
| 7sealed | 113 | Fujimoto, Kazumasa (1501) | Lost 1-2 | -181482 |
| top | average opponent: 1522record: 3-4 | new rating: 1482 | ||
| Grand Prix Sendai 2001 (extended) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 22 | Ogura, Taku (1500) | Won 2-0 | +181557 |
| 2extended | 18 | Arakida, Tomohito (1518) | Won 2-1 | +171574 |
| 3extended | 4 | Oba, Tetsu (1536) | Won 2-0 | +171591 |
| 4extended | 2 | Yamasaki, Rintarou (1658) | Lost 1-2 | -161575 |
| 5extended | 75 | Takakuwa, Akihiro (1504) | Lost 0-2 | -201555 |
| 6extended | 88 | Abe, Kouichi (1521) | Lost 0-2 | -181537 |
| 7extended | 107 | Ishigami, Kei (1455) | Lost 1-2 | -201517 |
| 8extended | 109 | Hirano, Yoshiki (1481) | Lost 1-2 | -191498 |
| top | average opponent: 1522record: 3-5 | new rating: 1498 | ||
| Grand Prix Shizuoka 2001 (ODY limited) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 15 | Ouchi, Atsuo (1500) | Draw 1-1 | 01483 |
| 2sealed | 199 | Horiuchi, Ikki (1500) | Won 2-0 | +181501 |
| 3sealed | 111 | Deyama, Hirofumi (1507) | Won 2-0 | +181519 |
| 4sealed | 65 | Niimi, Kiyoaki (1484) | Won 2-0 | +181537 |
| 5sealed | 31 | Higashi, Teppei (1586) | Won 2-1 | +191556 |
| 6sealed | 24 | Haneki, Daisuke (1560) | Lost 0-2 | -181538 |
| 7sealed | 50 | Sakamoto, Yuki (1573) | Lost 0-2 | -181520 |
| 8sealed | 82 | Iwade, Takashi (1573) | Won 2-1 | +191539 |
| top | average opponent: 1535record: 5-2-1 | new rating: 1539 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 434 | Makihara, Takuya (1500) | Won 2-0 | +181518 |
| 2block | 132 | Kawamura, Akihiro (1518) | Lost 1-2 | -181500 |
| 3block | 393 | Yamada, Yasuyuki (1500) | Won 2-0 | +181518 |
| 4block | 160 | Tsujimoto, Satoshi (1554) | Won 2-0 | +191537 |
| 5block | 252 | Naka, Taichiro (1518) | Lost 0-2 | -191518 |
| 6block | 345 | Nishimura, Shunichiro (1518) | Won 2-0 | +181536 |
| 7block | 185 | Ando, Hideki (1535) | Lost 1-2 | -181518 |
| 8block | 237 | Komatsu, Toshiaki (1545) | Lost 0-2 | -171501 |
| 9block | 201 | Nagaoka, Kazunori (1500) | Lost 1-2 | -181483 |
| top | average opponent: 1521record: 4-5 | new rating: 1483 | ||