Ito, Hidetoshi
Current rating: 1439
Record: 25-35
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1363 | |||
| round | table | opponent (rating) | result | Δrating |
| A1sealed | 293 | Gerou, Philip (1469) | Lost 0-2 | -161347 |
| B1sealed | 468 | Citron, Daniel (1484) | Lost 0-2 | -161331 |
| B2sealed | 596 | Luo, Kai (1484) | Won 2-0 | +211352 |
| B3sealed | 320 | Wong, Nanshium (1474) | Won 2-0 | +201372 |
| B4sealed | 268 | Benzinger, Chris (1591) | Lost 1-2 | -141358 |
| B5sealed | 405 | Jimenez, Roger (1496) | Won 2-0 | +201378 |
| B6sealed | 313 | Espenan, Jonathan (1601) | Won 2-0 | +221400 |
| B7sealed | 222 | Davisson, Zack (1454) | Won 2-1 | +191419 |
| B8sealed | 127 | Ediger, Jackson (1526) | Won 2-0 | +201439 |
| top | average opponent: 1509record: 6-3 | new rating: 1439 | ||
| Grand Prix Lille 2018 (GRN standard) | starting rating: 1364 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 70 | Moreau, Martial (1535) | Won 2-1 | +211385 |
| 2standard | 91 | Hamet, Baptiste (1560) | Lost 0-2 | -151370 |
| 3standard | 357 | Pastural, Nicolas (1502) | Won 2-1 | +211391 |
| 4standard | 305 | Banski, Jakub (1820) | Lost 1-2 | -111380 |
| 5standard | 450 | Libert, Julien (1414) | Lost 1-2 | -171363 |
| top | average opponent: 1566record: 2-3 | new rating: 1363 | ||
| Grand Prix Kuala Lumpur 2014 (THS limited) | starting rating: 1354 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 14 | Choy, Kevin (1405) | Won 2-0 | +191373 |
| 2sealed | 123 | Triphonratana, Boonyarit (1602) | Won 2-0 | +221395 |
| 3sealed | 121 | Chalermtanasak, Pattana (1486) | Won 2-0 | +191414 |
| 4sealed | 67 | Eing Yung, Lee (1535) | Lost 0-2 | -151399 |
| 5sealed | 126 | Duan, Chao (1431) | Won 2-0 | +181417 |
| 6sealed | 54 | Cantillana, Andrew (1920) | Lost 0-2 | -91408 |
| 7sealed | 88 | Brown, Matthew [AUS] (1541) | Lost 1-2 | -161392 |
| 8sealed | 200 | Chee, Wai Keong Edward (1523) | Lost 1-2 | -161376 |
| 9sealed | 178 | Cheng, Tung-Yi (1688) | Lost 0-2 | -121364 |
| top | average opponent: 1570record: 4-5 | new rating: 1364 | ||
| Grand Prix Okayama 2008 (ALA limited) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 167 | Konishi, Hideaki (1484) | Lost 0-0 | -171400 |
| 2sealed | 203 | Kitamoto, Hiroki (1524) | Lost 0-2 | -151385 |
| 3sealed | 252 | Morinaga, Masaharu (1431) | Lost 0-2 | -181367 |
| 4sealed | 272 | Okamura, Kazuya (1450) | Lost 1-2 | -161351 |
| 5sealed | 246 | Yamanishi, Kunihiko (1426) | Lost 0-2 | -171334 |
| 6sealed | 55 | aoki, yasuo (1411) | Won 2-1 | +201354 |
| top | average opponent: 1454record: 1-5 | new rating: 1354 | ||
| Grand Prix Matsuyama 2005 (BOK limited) | starting rating: 1403 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 43 | Ninomiya, Kenta (1500) | Won 2-0 | +201423 |
| 2sealed | 92 | Chuujou, Yoshihiko (1459) | Lost 0-2 | -181405 |
| 3sealed | 90 | Okumura, Yoshito (1510) | Won 2-0 | +201425 |
| 4sealed | 117 | Mino, Tetsuya (1455) | Lost 0-2 | -171408 |
| 5sealed | 140 | Nakada, Yuuji (1504) | Won 2-1 | +191427 |
| 6sealed | 100 | Jeon, Yong Sun (1517) | Won 2-1 | +201447 |
| 7sealed | 69 | Niimi, Kiyoaki (1589) | Lost 0-2 | -151432 |
| 8sealed | 83 | Sato, Rei (1625) | Lost 0-2 | -151417 |
| top | average opponent: 1520record: 4-4 | new rating: 1417 | ||
| Grand Prix Yokohama 2004 (COK limited) | starting rating: 1402 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 20 | Ota, Yusuke (1590) | Won 2-1 | +211423 |
| 3sealed | 104 | Takagi, Takeshi (1585) | Lost 1-2 | -151408 |
| 4sealed | 100 | Konno, Masashi (1594) | Lost 0-2 | -151393 |
| 5sealed | 151 | Miyajima, Yoshitaka (1651) | Lost 0-2 | -131380 |
| 6sealed | 192 | Ozawa, Masahiro (1429) | Won 2-1 | +191399 |
| 7sealed | 133 | Osumi, Keigo (1491) | Lost 1-2 | -161383 |
| 8sealed | 102 | Shiraishi, Masaharu (1501) | Won 2-0 | +201403 |
| top | average opponent: 1549record: 3-4 | new rating: 1403 | ||
| Grand Prix Hiroshima 2003 (extended) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 91 | Yamada, Tsutomu (1551) | Won 2-1 | +201454 |
| 2extended | 41 | Toochika, Takayuki (1480) | Lost 1-2 | -181436 |
| 3extended | 137 | Okuda, Masateru (1500) | Lost 1-2 | -171419 |
| 4extended | 136 | Maruyama, Takaaki (1442) | Lost 0-2 | -171402 |
| top | average opponent: 1493record: 1-3 | new rating: 1402 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 21 | Yamaguchi, Shoji (1535) | Lost 0-2 | -171467 |
| 4block | 174 | Nishikido, Yuji (1501) | Won 2-1 | +191486 |
| 5block | 98 | Okada, Ryoji (1537) | Lost 1-2 | -171469 |
| 6block | 237 | Nishioka, Kazuya (1485) | Lost 1-2 | -181451 |
| 7block | 290 | Nishimura, Masaaki (1482) | Lost 1-2 | -171434 |
| top | average opponent: 1508record: 1-4 | new rating: 1434 | ||
| Grand Prix Kyoto 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 62 | Amano, Hideaki (1486) | Lost 1-2 | -181482 |
| 3extended | 219 | Nishiwaki, Kenta (1500) | Lost 0-2 | -181464 |
| 4extended | 278 | Yamano, Tomoya (1465) | Won 2-0 | +181482 |
| 5extended | 186 | Nakao, Tomohiko (1500) | Lost 0-2 | -181464 |
| 6extended | 211 | Matsuo, Takemi (1515) | Won 2-1 | +191483 |
| 7extended | 157 | Kojima, Kazuyoshi (1500) | Lost 1-2 | -171466 |
| 8extended | 168 | Nishimura, Masaaki (1500) | Won 2-1 | +181484 |
| top | average opponent: 1495record: 3-4 | new rating: 1484 | ||