Iwasaki, Daisuke
Current rating: 1679
Record: 48-40-2
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1680 | |||
| round | table | opponent (rating) | result | Δrating |
| 2pioneer | 131 | Nakamura, Kazutaka (1537) | Won 2-1 | +151695 |
| 3pioneer | 12 | Nakazawa, Yusuke (1409) | Lost 0-2 | -231672 |
| 4pioneer | 437 | Yoshihara, Shinji (1402) | Won 2-1 | +131685 |
| 5pioneer | 232 | Xie, Zhan (1774) | Won 2-0 | +201705 |
| 6pioneer | 221 | Okamoto, Yasutaka (1455) | Lost 1-2 | -221683 |
| 7pioneer | 210 | Masui, Shuryu (1505) | Lost 0-2 | -221661 |
| 8pioneer | 283 | Sekine, Yoshinori (1643) | Won 2-1 | +181679 |
| top | average opponent: 1532record: 4-3 | new rating: 1679 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1657 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 87 | Kato, Atushi (1538) | Won 2-0 | +161673 |
| 3standard | 340 | Kimura, Minori (1495) | Won 2-0 | +141687 |
| 4standard | 204 | Urasaki, Takayuki (1763) | Lost 1-2 | -161671 |
| 5standard | 215 | Murao, Keisuke (1599) | Won 2-1 | +161687 |
| 6standard | 154 | Takashima, Daisuke (1591) | Lost 1-2 | -191668 |
| 7standard | 363 | Higuchi, Akashi (1738) | Won 2-1 | +191687 |
| 8standard | 185 | Tanaka, Hironao (1731) | Won 2-1 | +191706 |
| 9standard | 102 | Nakashima, Shunichi (1835) | Won 2-1 | +201726 |
| 10standard | 41 | Yoshimori, Sho (1696) | Lost 1-2 | -181708 |
| 11standard | 138 | Mori, Tomoki (1537) | Lost 1-2 | -221686 |
| 12standard | 141 | Yamada, Hiroki (1611) | Lost 0-2 | -191667 |
| 13standard | 131 | Kihara, Yasuyuki (1526) | Won 2-0 | +161683 |
| 14standard | 111 | Hasebe, Sho (1603) | Won 2-0 | +161699 |
| 15standard | 96 | Murase, Hiroshi (1638) | Lost 0-2 | -191680 |
| top | average opponent: 1636record: 8-6 | new rating: 1680 | ||
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1672 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 492 | Honda, Masaki (1223) | Won 2-0 | +101682 |
| 3sealed | 31 | Sugizaki, Shunsuke (1602) | Won 2-1 | +171699 |
| 4sealed | 223 | Fujita, Tsuyoshi (1976) | Lost 0-2 | -131686 |
| 5sealed | 200 | Murata, Shinya (1541) | Lost 0-2 | -211665 |
| 6sealed | 367 | Takawashi, Kenji (1493) | Lost 0-2 | -211644 |
| 7sealed | 534 | Nagase, Hirofumi (1345) | Won 2-0 | +131657 |
| top | average opponent: 1530record: 3-3 | new rating: 1657 | ||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1508 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 273 | Hasegawa, Atusi (1369) | Won 2-0 | +151523 |
| 3modern | 3 | Aridome, Tomohiro (1954) | Won 2-1 | +261549 |
| 4modern | 105 | Oikawa, Ryusuke (1652) | Lost 1-2 | -171532 |
| 5modern | 390 | Miyazawa, Shoya (1536) | Won 2-0 | +181550 |
| 6modern | 105 | Murakami, Akinori (1609) | Won 2-1 | +201570 |
| 7modern | 45 | Sasaki, Yusuke 1421 (1724) | Won 2-0 | +201590 |
| 8modern | 40 | Kamata, Kazuhiro (1793) | Won 2-1 | +221612 |
| 9modern | 45 | Kawabe, Koki (1607) | Won 2-1 | +181630 |
| 10modern | 19 | Kawaguchi, Takashi (1702) | Won 2-0 | +191649 |
| 11modern | 10 | Mune, Kento (1696) | Won 2-0 | +191668 |
| 12modern | 6 | Okuno, Ryohei (1833) | Won 2-0 | +211689 |
| 13modern | 1 | Takahashi, Tetsuhiro (1770) | Won 2-1 | +201709 |
| 14modern | 2 | Asano, Kurenai (1646) | Lost 0-2 | -201689 |
| 15modern | 8 | Ferrer, John Reuben (1719) | Lost 0-2 | -171672 |
| top | average opponent: 1686record: 11-3 | new rating: 1672 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 473 | Fukushi, Kyouhei (1524) | Won 2-0 | +191489 |
| 3sealed | 316 | Muto, Shogo (1633) | Lost 1-2 | -151474 |
| 4sealed | 481 | Hashidate, Itaru (1506) | Won 2-0 | +181492 |
| 5sealed | 241 | Wada, Shusaku (1516) | Won 2-1 | +191511 |
| 6sealed | 253 | Koziol, Eric (1499) | Lost 0-2 | -181493 |
| 7sealed | 261 | Yamamoto, Ryoichi (1607) | Won 2-0 | +201513 |
| 8sealed | 338 | Nose, Kouta (1737) | Won 2-1 | +221535 |
| 9sealed | 199 | Sochurek, Petr (2017) | Lost 1-2 | -101525 |
| 10draft | 757 | Yagawa, Masataka (1623) | Lost 0-2 | -161509 |
| 11draft | 710 | Tobisawa, Takenori (1491) | Won 2-1 | +171526 |
| 12draft | 752 | Tazawa, Masayuki (1485) | Lost 1-2 | -181508 |
| top | average opponent: 1603record: 6-5 | new rating: 1508 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 118 | Liao, Yi-Nan (1809) | Won 2-0 | +241484 |
| 4modern | 263 | Oonishi, Tatsuya (1572) | Won 2-1 | +191503 |
| 5modern | 156 | Abe, Ken'Ichi (1753) | Won 2-1 | +231526 |
| 6modern | 20 | Bandou, Junichirou (1793) | Won 2-1 | +231549 |
| 7modern | 29 | Kawakami, Hiroshi (1728) | Lost 1-2 | -151534 |
| 8modern | 106 | Kasuga, Ryou (1591) | Lost 1-2 | -171517 |
| 9modern | 245 | Suematsu, Takaaki (1942) | Lost 1-2 | -111506 |
| 10modern | 370 | Hee, Chung Wye (1435) | Won 2-0 | +171523 |
| 11modern | 290 | Niwa, Ryuuta (1522) | Lost 0-2 | -181505 |
| 12modern | 264 | Takeda, Hiroshi (1499) | Lost 0-2 | -181487 |
| 13modern | 267 | Komori, Yuuya (1508) | Won 2-0 | +181505 |
| 14modern | 203 | Lagasca, Rafael (1682) | Lost 0-2 | -151490 |
| 15modern | 212 | Mizuno, Shiori (1381) | Lost 1-2 | -201470 |
| top | average opponent: 1632record: 6-7 | new rating: 1470 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 484 | Nagasato, Kotaro (1500) | Lost 0-2 | -171415 |
| 2standard | 697 | Matsuo, Keisuke (1556) | Won 2-0 | +211436 |
| 3standard | 796 | Sonoda, Takayuki (1374) | Won 2-1 | +171453 |
| 4standard | 767 | Nisi, Ryota (1608) | Lost 0-2 | -161437 |
| 5standard | 986 | Uchikawa, Daiya (1426) | Won 2-1 | +181455 |
| 6standard | 423 | Fujii, Mikiya (1472) | Lost 1-2 | -171438 |
| 7standard | 787 | Kobayashi, Hiroya (1530) | Won 2-0 | +191457 |
| 8standard | 503 | Iwasaki, Koichi (1525) | Won 2-1 | +191476 |
| 9standard | 533 | Dai, Xiangjun (1536) | Lost 0-2 | -161460 |
| top | average opponent: 1503record: 5-4 | new rating: 1460 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 343 | Takeda, Shuichiro (1558) | Lost 1-2 | -161446 |
| 2legacy | 797 | Jifuku, Takero (1482) | Draw 1-1 | +11447 |
| 3legacy | 1022 | Djokic, Nick (1465) | Lost 0-2 | -181429 |
| 4legacy | 1095 | Mitsuhashi, Ryota (1469) | Lost 0-2 | -171412 |
| 5legacy | 1114 | Tanaka, Masaki (1444) | Draw 1-1 | 01412 |
| 6legacy | 1069 | Wakabayashi, Shigeaki (1444) | Won 2-0 | +191431 |
| 7legacy | 963 | Morizaki, Yuki (1459) | Lost 0-2 | -181413 |
| 8legacy | 873 | Tanabe, Masatoshi (1447) | Won 2-1 | +191432 |
| top | average opponent: 1471record: 2-4-2 | new rating: 1432 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 548 | Takahashi, Naoya (1664) | Lost 0-2 | -151485 |
| 2standard | 902 | Yoshii, Shunsuke (1437) | Lost 1-2 | -191466 |
| 3standard | 1475 | Saito, Kodai (1462) | Lost 0-2 | -181448 |
| 4standard | 1570 | Shinozuka, Hideaki (1446) | Won 1-0 | +181466 |
| 5standard | 1424 | Takahashi, Muneaki (1427) | Lost 0-2 | -191447 |
| 6standard | 1409 | Suzuki, Shutaro (1448) | Won 2-0 | +181465 |
| 7standard | 1171 | Muraki, Yuta (1375) | Won 2-1 | +171482 |
| 8standard | 990 | Matsuda, Kenta (1404) | Lost 0-2 | -201462 |
| top | average opponent: 1458record: 3-5 | new rating: 1462 | ||