Iwata, Sho
Current rating: 1424
Record: 31-41
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 305 | Deese, Seth (1500) | Won 2-1 | +201431 |
| 2modern | 419 | Harkness, Addison (1470) | Won 2-1 | +181449 |
| 3modern | 422 | Larson, Devin (1500) | Lost 0-2 | -171432 |
| 4modern | 504 | Morgan, Jon (1537) | Won 2-0 | +201452 |
| 5modern | 248 | Monsees, Nathaniel (1842) | Lost 1-2 | -111441 |
| 6modern | 1340 | Gilchrest, Joshua (1518) | Lost 0-2 | -171424 |
| top | average opponent: 1561record: 3-3 | new rating: 1424 | ||
| Grand Prix Las Vegas 2017 (modern) (modern) | starting rating: 1443 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 2102 | Ip, Brian (1447) | Lost 1-2 | -181425 |
| 2modern | 2168 | Tran, Saron (1468) | Won 2-1 | +191444 |
| 3modern | 2151 | Solis, Joaquin (1601) | Lost 1-2 | -151429 |
| 4modern | 2185 | Brent, Ryan (1435) | Lost 0-2 | -181411 |
| top | average opponent: 1488record: 1-3 | new rating: 1411 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1435 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2135 | Byer, Jon (1583) | Won 2-0 | +211456 |
| 2sealed | 2116 | Skrypov, Igor (1445) | Lost 0-2 | -181438 |
| 3sealed | 2149 | Hadley, Mike (1481) | Won 2-1 | +181456 |
| 4sealed | 2148 | Sary, Nathan (1570) | Lost 1-2 | -161440 |
| 5sealed | 2152 | Kirshon, Daniel (1554) | Won 2-1 | +211461 |
| 6sealed | 2136 | Simoncic, Brandon (1508) | Won 2-0 | +181479 |
| 7sealed | 2137 | Young, Matthew (1432) | Lost 0-2 | -181461 |
| 8sealed | 2131 | Li, Haoze (1503) | Lost 1-2 | -181443 |
| top | average opponent: 1510record: 4-4 | new rating: 1443 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1403 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 2144 | Freytag, Eric (1512) | Lost 0-2 | -161387 |
| 2legacy | 2166 | Medalssi, Aiden (1429) | Won 2-0 | +191406 |
| 3legacy | 2147 | Brotchie, David (1524) | Won 2-0 | +201426 |
| 4legacy | 2144 | Holland, Joe (1646) | Lost 1-2 | -141412 |
| 5legacy | 2154 | Nguyen, Andy (1454) | Won 2-0 | +191431 |
| 6legacy | 2126 | Goldstein, Danny (1711) | Won 2-0 | +231454 |
| 7legacy | 2137 | Patterson, Matthew (1326) | Won 2-1 | +151469 |
| 8legacy | 2112 | Savage, Dan (1468) | Lost 1-2 | -181451 |
| 9legacy | 2115 | Buttrick, Jonathan (1550) | Lost 1-2 | -161435 |
| top | average opponent: 1513record: 5-4 | new rating: 1435 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1411 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 263 | Takano, Hirokazu (1422) | Won 2-0 | +181429 |
| 2standard | 462 | Takahashi, Haruki (1496) | Lost 0-2 | -171412 |
| 3standard | 854 | Hata, Tomonori (1414) | Won 2-0 | +181430 |
| 4standard | 671 | Hino, Tomoaki (1447) | Won 2-0 | +191449 |
| 5standard | 433 | Yamamoto, Kouhei2453 (1661) | Lost 1-2 | -141435 |
| 6standard | 831 | Ueyama, Yuji (1504) | Lost 0-2 | -171418 |
| 7standard | 1029 | Sakaino, Yuta (1596) | Lost 1-2 | -151403 |
| top | average opponent: 1506record: 3-4 | new rating: 1403 | ||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1375 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 184 | Kurachi, Yuuya (1430) | Lost 1-2 | -171358 |
| 2sealed | 238 | Sasaki, Yuuki (1505) | Won 2-1 | +211379 |
| 3sealed | 339 | Watanabe, Takefumi (1452) | Won 2-1 | +191398 |
| 4sealed | 177 | Wentao, Qi (1642) | Won 2-1 | +221420 |
| 5sealed | 58 | Onishi, Kouhei (1531) | Lost 1-2 | -161404 |
| 6sealed | 213 | Nomura, Shintaro (1492) | Won 2-1 | +201424 |
| 7sealed | 158 | Kojima, Yuusuke (Osaka) (1537) | Lost 1-2 | -161408 |
| 8sealed | 173 | Kouno, Hrokazu (1513) | Lost 1-2 | -161392 |
| 9sealed | 158 | Yoshino, Satoshi (1458) | Won 2-1 | +191411 |
| top | average opponent: 1507record: 5-4 | new rating: 1411 | ||
| Grand Prix Hong Kong 2013 (THS limited) | starting rating: 1362 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 197 | Leonov, Alexander (1502) | Won 2-1 | +201382 |
| 2sealed | 124 | Kong, Yip Keung (1518) | Lost 1-2 | -151367 |
| 3sealed | 299 | Buffone, Guillaume (1500) | Won 2-0 | +201387 |
| 4sealed | 290 | Wang, Zheng (1468) | Won 2-0 | +201407 |
| 5sealed | 90 | Kai, Kai (1500) | Lost 1-2 | -171390 |
| 6sealed | 248 | NG, Tom (1519) | Lost 1-2 | -151375 |
| top | average opponent: 1501record: 3-3 | new rating: 1375 | ||
| Grand Prix Bangkok 2013 (DGM limited) | starting rating: 1367 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 88 | Ha, Sang-Mook (1527) | Won 2-1 | +211388 |
| 2sealed | 22 | Kwok Siang, Neo (1595) | Won 2-0 | +221410 |
| 3sealed | 33 | jitmaithree, kitipong (1521) | Lost 1-2 | -161394 |
| 4sealed | 186 | Madzlan, Khairul Anwardin (1475) | Lost 1-2 | -171377 |
| 5sealed | 199 | Prasittigoon, Korakot (1526) | Lost 0-2 | -151362 |
| top | average opponent: 1529record: 2-3 | new rating: 1362 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1399 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 118 | Hoshino, Shinya (1436) | Lost 1-2 | -171382 |
| 2sealed | 372 | Shinonaga, Tatsunori (1480) | Won 2-0 | +191401 |
| 3sealed | 342 | Matsumoto, Kenji (1449) | Lost 1-2 | -171384 |
| 4sealed | 441 | Aiba, Takashi (1430) | Lost 0-2 | -171367 |
| top | average opponent: 1449record: 1-3 | new rating: 1367 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 139 | Tamura, Youhei (1470) | Lost 0-2 | -171410 |
| 2extended | 204 | Nakayama, Yuuki (1482) | Lost 0-2 | -171393 |
| 3extended | 224 | Takeshita, Yoshiyasu (1379) | Won 2-0 | +181411 |
| 4extended | 198 | Izumi, Hikaru (1504) | Won 2-0 | +201431 |
| 5extended | 161 | Fukushima, Shungo (1507) | Won 2-1 | +191450 |
| 6extended | 141 | Yamamoto, Kazuhide (1456) | Lost 1-2 | -181432 |
| 7extended | 63 | Hirota, Ginjiro (1466) | Lost 0-2 | -171415 |
| 8extended | 109 | Tonouchi, Keita (1522) | Lost 1-2 | -161399 |
| top | average opponent: 1473record: 3-5 | new rating: 1399 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 20 | Takeda, Shinnosuke (1500) | Lost 1-2 | -181482 |
| 2block | 314 | Yabe, Yosuke (1428) | Lost 0-2 | -191463 |
| 3block | 327 | Sugisawa, Tsuyoshi (1485) | Lost 0-2 | -181445 |
| 4block | 374 | Takeshita, Yoshiyasu (1448) | Won 2-1 | +181463 |
| 5block | 317 | Kanamori, Yuya (1463) | Lost 0-2 | -181445 |
| 6block | 292 | Sasamoto, Yuko (1442) | Lost 0-2 | -181427 |
| top | average opponent: 1461record: 1-5 | new rating: 1427 | ||