Iwata, Ryoji
Current rating: 1614
Record: 25-31 (GP) / 8-7 (professional)
| Regional Championships Chiba 2023 (pioneer) | starting rating: 1492 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 43 | Tsujii, Shoichi (1491) | Won 2-1 | +181510 |
| 2pioneer | 18 | Je, Sungeun (1720) | Won 2-1 | +221532 |
| 3pioneer | 12 | Ma, Noah (1858) | Lost 1-2 | -121520 |
| 4pioneer | 23 | Adachi, Ryosuke (1719) | Won 2-1 | +221542 |
| 5pioneer | 34 | Omori, Ken'ichirou (1803) | Won 2-1 | +221564 |
| 6pioneer | 13 | Morimoto, Yutaro (1662) | Won 2-1 | +201584 |
| 7pioneer | 8 | Nomiya, Yohei (1631) | Lost 1-2 | -171567 |
| 8pioneer | 16 | Fujiwara, Mizuki (1694) | Won 2-1 | +201587 |
| 9pioneer | 5 | Tase, Yuya (1633) | Won 2-0 | +191606 |
| 10pioneer | 3 | Inoue, Toru (2026) | Won 2-0 | +251631 |
| 11pioneer | 2 | Ogasawara, Tomoaki (1795) | ID | 01631 |
| 12pioneer | 5 | Von Stange, Alex (1675) | Lost 1-2 | -171614 |
| top | average opponent: 1725record: 8-3-1 | new rating: 1614 | ||
| Players Tour Nagoya 2020 (pioneer) | starting rating: 1393 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 84 | Hirami, Tomonori (1890) | Won 2-1 | +261419 |
| 2draft | 24 | Chernyshev, Mikhail (1484) | Won 2-0 | +191438 |
| 3draft | 61 | Yaocheng, Mark (1725) | Won 2-1 | +241462 |
| 4pioneer | 4 | Yukuhiro, Ken (2066) | Lost 0-2 | -91453 |
| 5pioneer | 16 | Wijaya, Christian (1733) | Won 2-1 | +231476 |
| 6pioneer | 14 | Tanahashi, Masayasu (1920) | Won 2-1 | +261502 |
| 7pioneer | 7 | Lip, Quinton (1813) | Lost 1-2 | -131489 |
| 8pioneer | 16 | Winata, Gregorius Andrew (1610) | Won 2-1 | +211510 |
| 9pioneer | 10 | Tsuda, Tomohiro (1709) | Lost 1-2 | -151495 |
| 10draft | 12 | Garces, Craig Shaun (1622) | Won 2-0 | +211516 |
| 11draft | 4 | Lee, Shi Tian (2052) | Lost 1-2 | -101506 |
| 12draft | 12 | Butakov, Dmitriy (1926) | Lost 1-2 | -101496 |
| 13pioneer | 18 | Yam, Wing Chun (1874) | Won 2-1 | +241520 |
| 14pioneer | 20 | Fujita, Toshihide (1792) | Lost 1-2 | -131507 |
| 15pioneer | 22 | Hilario, Jose Gabriel (1694) | Lost 1-2 | -151492 |
| top | average opponent: 1794record: 8-7 | new rating: 1492 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1369 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 98 | Hamaoka, Yuma (1554) | Lost 1-2 | -151354 |
| 4sealed | 494 | Takano, Kodai (1800) | Lost 1-2 | -101344 |
| 5sealed | 748 | Uesugi, Shunta (1522) | Won 2-0 | +211365 |
| 6sealed | 551 | Motomura, Shigeru (1721) | Won 2-0 | +241389 |
| 7sealed | 302 | Futada, Takahiro (1518) | Won 2-0 | +211410 |
| 8sealed | 138 | Mizuno, Masahito (1483) | Lost 1-2 | -171393 |
| top | average opponent: 1600record: 3-3 | new rating: 1393 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1409 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 487 | Nogimura, Ryo (1481) | Lost 1-2 | -171392 |
| 3modern | 709 | Ohmura, Satoshi (1502) | Lost 1-2 | -161376 |
| 4modern | 871 | Choi, Suouk (1515) | Lost 0-2 | -151361 |
| 5modern | 1073 | Fujimura, Kyuta (1468) | Lost 1-2 | -161345 |
| 6modern | 945 | Nakanishi, Takahide (1445) | Lost 1-2 | -161329 |
| 7modern | 821 | Nakahara, Daichi (1442) | Won 2-0 | +201349 |
| 8modern | 705 | Mizuno, Takeshi (1468) | Won 2-0 | +201369 |
| top | average opponent: 1474record: 2-5 | new rating: 1369 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1370 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 178 | Nogami, Tokio (1550) | Lost 0-2 | -141356 |
| 3standard | 600 | Matsui, Tatsuyoshi (1523) | Won 2-0 | +211377 |
| 4standard | 596 | Nakamura, Masaya (1504) | Won 2-0 | +201397 |
| 5standard | 198 | Aizawa, Tamotsu (1507) | Lost 0-2 | -161381 |
| 6standard | 436 | Sugiura, Masayuki (1494) | Won 2-0 | +201401 |
| 7standard | 424 | Nakai, Tomoki (1712) | Won 2-1 | +241425 |
| 8standard | 208 | Imazawa, Junpei (1563) | Lost 1-2 | -161409 |
| top | average opponent: 1550record: 4-3 | new rating: 1409 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1396 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 522 | Hayamizu, Akira (1517) | Lost 0-2 | -151381 |
| 3standard | 848 | Iwayama, Masatomo (1597) | Won 2-1 | +221403 |
| 4standard | 725 | Sato, Naoki2689 (1490) | Lost 1-2 | -171386 |
| 5standard | 696 | Shinoda, Takayuki (1513) | Lost 1-2 | -161370 |
| top | average opponent: 1529record: 1-3 | new rating: 1370 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1378 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 540 | Kamezawa, Yoshifumi (1500) | Lost 1-2 | -161362 |
| 2sealed | 821 | Nakaizumi, Kazuya (1431) | Lost 1-2 | -171345 |
| 3sealed | 1049 | Inomata, Chihiro (1385) | Won 2-0 | +191364 |
| 4sealed | 889 | Nakano, Kengo (1483) | Won 2-1 | +201384 |
| 5sealed | 812 | Kobayashi, Tetsuro (1592) | Lost 1-2 | -141370 |
| 6sealed | 810 | Kawajiri, Saho (1478) | Won 2-1 | +201390 |
| 7sealed | 650 | Goshima, Akito (1716) | Lost 1-2 | -121378 |
| 8sealed | 523 | Ishikawa, Naoki (1417) | Won 2-0 | +181396 |
| top | average opponent: 1500record: 4-4 | new rating: 1396 | ||
| Grand Prix Kyoto 2017 (HOU limited) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 586 | Suezawa, Takumi (1485) | Won 2-0 | +191450 |
| 2sealed | 258 | Kobayashi, Jun (1437) | Lost 0-2 | -191431 |
| 3sealed | 575 | Kawano, Toshifumi (1497) | Lost 1-2 | -161415 |
| 4sealed | 999 | Otani, Kodai (1488) | Lost 0-2 | -171398 |
| 5sealed | 1004 | Itazu, Boram (1289) | Lost 0-2 | -201378 |
| top | average opponent: 1439record: 1-4 | new rating: 1378 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 132 | Oka, Nobuaki (1465) | Lost 0-2 | -171431 |
| top | record: 0-1 | new rating: 1431 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 255 | Takano, Kouhei (1668) | Lost 1-2 | -151485 |
| 2standard | 795 | Mizuno, Yuya (1383) | Won 2-0 | +161501 |
| 3standard | 832 | Tanaka, Kimitaka (1806) | Lost 0-2 | -121489 |
| 4standard | 1105 | Sato, Naoki2689 (1487) | Lost 0-2 | -181471 |
| 5standard | 1178 | Okada, Koji (1420) | Won 2-1 | +171488 |
| 6standard | 884 | Kan, Kensei (1437) | Lost 0-2 | -191469 |
| 7standard | 1008 | Sonoda, Takayuki (1342) | Lost 0-2 | -211448 |
| top | average opponent: 1506record: 2-5 | new rating: 1448 | ||