Itou, Masahiro
Current rating: 1437
Record: 35-42
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 289 | Okamoto, Katsuki (1678) | Lost 1-2 | -141456 |
| 2standard | 528 | Ozawa, Kensuke (1467) | Lost 0-2 | -181438 |
| 3standard | 983 | Takeda, Shota (1288) | Won 2-0 | +151453 |
| 4standard | 928 | Hamano, Kouhei (1536) | Lost 1-2 | -161437 |
| top | average opponent: 1492record: 1-3 | new rating: 1437 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 286 | Adachi, Yoshiya (1520) | Lost 0-2 | -191526 |
| 3sealed | 706 | Oonishi, Yuuki (1427) | Lost 0-2 | -191507 |
| 4sealed | 1042 | Shimada, Yuuya (1468) | Lost 0-2 | -191488 |
| 5sealed | 1039 | Takasawa, Yuuki (1494) | Lost 0-2 | -181470 |
| top | average opponent: 1477record: 0-4 | new rating: 1470 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1477 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 307 | Taki, Yoshikazu (1475) | Won 2-1 | +181495 |
| 3modern | 49 | Nishida, Makoto (1444) | Lost 1-2 | -191476 |
| 4modern | 526 | Asai, Kyosuke (1524) | Won 2-1 | +191495 |
| 5modern | 408 | Sablan, Ant (1518) | Won 2-0 | +191514 |
| 6modern | 169 | Munekata, Yuuki (1796) | Won 2-1 | +231537 |
| 7modern | 124 | Saeki, Tadatoshi (1665) | Lost 1-2 | -161521 |
| 8modern | 399 | Kusadani, Takehiko (1664) | Lost 0-2 | -161505 |
| 9modern | 414 | Jinno, Kaname (1468) | Won 2-0 | +181523 |
| 10modern | 219 | Yen, Yung Ta (1491) | Won 2-1 | +171540 |
| 11modern | 133 | Fujii, Akira (1582) | Won 2-1 | +191559 |
| 12modern | 161 | Nose, Shunsuke (1779) | Lost 1-2 | -141545 |
| top | average opponent: 1582record: 7-4 | new rating: 1545 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1459 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 8 | Nakamura, Hajime (1686) | Lost 1-2 | -141445 |
| 3standard | 719 | Katou, Takeru (1432) | Won 2-0 | +181463 |
| 4standard | 726 | Morishita, Yoshihisa (1460) | Won 2-0 | +181481 |
| 5standard | 334 | Takagi, Takeshi (1708) | Lost 0-2 | -141467 |
| 6standard | 501 | Nakanishi, Toma (1519) | Won 2-1 | +191486 |
| 7standard | 418 | Osawa, Takuya (2009) | Lost 1-2 | -91477 |
| 8standard | 698 | Umeki, Ryo (1566) | Lost 1-2 | -171460 |
| 9standard | 652 | Sumiya, Takayuki (1403) | Won 2-1 | +171477 |
| top | average opponent: 1598record: 4-4 | new rating: 1477 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1488 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 127 | Kawasaki, Hideaki (1555) | Won 2-0 | +191507 |
| 3legacy | 207 | Miles-Watson, Matthew (1500) | Lost 1-2 | -181489 |
| 4legacy | 417 | Takatsuka, Yuuki (1645) | Won 2-0 | +211510 |
| 5legacy | 438 | Oono, Jun (1465) | Lost 0-2 | -191491 |
| 6legacy | 512 | Sekiguchi, Kota (1573) | Lost 0-2 | -171474 |
| 7legacy | 773 | Kimura, Takuya (1513) | Won 2-1 | +191493 |
| 8legacy | 595 | Minami, Takahiro (1575) | Lost 1-2 | -161477 |
| 9legacy | 598 | Nishino, Tooru (1500) | Lost 0-2 | -181459 |
| top | average opponent: 1541record: 3-5 | new rating: 1459 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1533 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 259 | Kumon, Shun (1541) | Lost 1-2 | -181515 |
| 4standard | 178 | Sato, Keisuke (1483) | Lost 1-2 | -191496 |
| 5standard | 421 | Kitahara, Hiroaki (1816) | Lost 0-2 | -121484 |
| 6standard | 444 | Nishimura, Noboru (1501) | Won 2-0 | +181502 |
| 7standard | 285 | Sakamoto, Takumi (1502) | Won 2-0 | +181520 |
| 8standard | 239 | Gotou, Hiroyuki (1646) | Lost 0-2 | -161504 |
| 9standard | 260 | Kameyama, Takeshi (1583) | Lost 1-2 | -161488 |
| top | average opponent: 1582record: 2-5 | new rating: 1488 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 59 | Kurakami, Shun (1651) | Won 2-1 | +201549 |
| 4standard | 87 | Takenaka, Susumu (1552) | Lost 1-2 | -181531 |
| 5standard | 243 | Traboco, Manuel (1574) | Won 2-0 | +191550 |
| 6standard | 233 | Honda, Yuji (1593) | Lost 1-2 | -171533 |
| 7standard | 263 | To, Chun Him (1537) | Won 2-0 | +181551 |
| 8standard | 237 | fuzita, Tomohiro (1551) | Lost 0-2 | -181533 |
| top | average opponent: 1576record: 3-3 | new rating: 1533 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 98 | Kondo, Shuichi (1484) | Lost 1-2 | -201549 |
| 3modern | 510 | Kitabayashi, Nobuyuki (1459) | Won 2-1 | +171566 |
| 4modern | 339 | Sato, Kimihiko (1691) | Lost 1-2 | -161550 |
| 5modern | 486 | Takayasu, Yuta (1498) | Won 2-1 | +171567 |
| 6modern | 247 | Pai, Bruce (1590) | Lost 1-2 | -181549 |
| 7modern | 387 | Tsukagoshi, Tadaki (1591) | Lost 0-2 | -171532 |
| 8modern | 329 | Hada, Kazumasa (1482) | Won 2-0 | +171549 |
| 9modern | 241 | Yamauchi, Kazushi (1417) | Lost 1-2 | -201529 |
| top | average opponent: 1526record: 3-5 | new rating: 1529 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 116 | Fujino, Satoshi (1381) | Won 2-1 | +151552 |
| 2sealed | 228 | Fujino, Yoshitaka (1519) | Won 2-0 | +171569 |
| 3sealed | 28 | Suzuki, Nobuyoshi (1742) | Lost 0-2 | -151554 |
| 4sealed | 259 | Kitani, Ryouta (1489) | Lost 0-2 | -191535 |
| 5sealed | 405 | Takahashi, Mikito (1497) | Won 2-1 | +171552 |
| 6sealed | 205 | Yuuta, Ohgai (1519) | Won 2-0 | +181570 |
| 7sealed | 179 | Ishihara, Jun (1615) | Lost 0-2 | -171553 |
| 8sealed | 184 | Yagi, Tetsuhiro (1445) | Won 2-0 | +161569 |
| top | average opponent: 1526record: 5-3 | new rating: 1569 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 4standard | 114 | Ichimura, Yuji (1555) | Won 2-0 | +181546 |
| 5standard | 51 | Tamura, Ryo (1704) | Lost 0-2 | -151531 |
| 6standard | 36 | Yamashita, Kouhei (1517) | Lost 1-2 | -181513 |
| 7standard | 101 | Suzuki, Hiroumi (1596) | Won 2-1 | +191532 |
| 8standard | 119 | Baba, Yasunori (1755) | Won 2-1 | +221554 |
| 9standard | 74 | Honda, Jun'Ichi (1572) | Lost 0-2 | -171537 |
| top | average opponent: 1617record: 3-3 | new rating: 1537 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 231 | Azuma, Motokiyo (1707) | Won 2-0 | +221522 |
| 2extended | 211 | Miyabe, Kouichi (1560) | Won 2-1 | +181540 |
| 3extended | 140 | Tomii, Tsubasa (1798) | Lost 1-2 | -131527 |
| 4extended | 275 | Ishihara, Jun (1628) | Lost 0-2 | -161511 |
| 5extended | 355 | Amino, Kaoru (1516) | Won 2-1 | +181529 |
| 6extended | 228 | Kihara, Ryou (1520) | Won 2-1 | +181547 |
| 7extended | 171 | Yamamoto, Takao (1488) | Lost 1-2 | -191528 |
| top | average opponent: 1602record: 4-3 | new rating: 1528 | ||