Sumii, Hiroyuki
Current rating: 1478
Record: 35-38-2
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 295 | Hayashi, Katsuji (1471) | Won 2-0 | +181522 |
| 2standard | 305 | Umemura, Yuya (1517) | Lost 0-2 | -181504 |
| 3standard | 662 | Yoshimura, Takashi (1507) | Won 2-1 | +181522 |
| 4standard | 533 | Ichimi, Kenji (1506) | Lost 0-2 | -191503 |
| 5standard | 853 | Nakajima, Masato (1462) | Lost 1-2 | -181485 |
| 6standard | 798 | Suzuki, Ryuuichi (1240) | Won 2-1 | +131498 |
| 7standard | 653 | Nishina, Akihiko (1468) | Draw 1-1 | 01498 |
| 8standard | 623 | Arakaki, Gen (1424) | Lost 1-2 | -201478 |
| top | average opponent: 1449record: 3-4-1 | new rating: 1478 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 73 | Sakou, Chihiro (1430) | Won 2-1 | +161557 |
| 2legacy | 130 | Azuma, Yuki (1531) | Lost 0-2 | -191538 |
| 3legacy | 499 | Banba, Taiki (1592) | Lost 1-2 | -171521 |
| 4legacy | 508 | Saldanha Dos Santos, Helio (1558) | Won 2-1 | +191540 |
| 5legacy | 327 | Sekimoto, Kandai (1864) | Won 2-1 | +241564 |
| 6legacy | 360 | Aoi, Ryuta (1481) | Lost 0-2 | -201544 |
| 7legacy | 414 | Suzuki, Yuuhei (1375) | Lost 1-2 | -211523 |
| 8legacy | 385 | Yuuta, Minami (1478) | Lost 1-2 | -191504 |
| top | average opponent: 1539record: 3-5 | new rating: 1504 | ||
| Grand Prix Chiba 2016 (legacy) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 767 | Ikebata, Yusuke (1362) | Won 2-0 | +171456 |
| 2legacy | 143 | Nakamura, Satoshi (1574) | Won 2-0 | +201476 |
| 3legacy | 540 | Kuroda, Akihiro (1504) | Won 2-0 | +191495 |
| 4legacy | 55 | Washimi, Kazuo (1671) | Draw 1-1 | +31498 |
| 5legacy | 154 | Chen, Yen-Hsiang (1458) | Won 2-1 | +171515 |
| 6legacy | 75 | Matsuo, Yoshiyuki (1704) | Won 2-0 | +221537 |
| 7legacy | 36 | Kobayashi, Tatsuumi (1824) | Lost 0-2 | -131524 |
| 8legacy | 121 | Moriya, Toshihiko (1626) | Won 2-1 | +191543 |
| 9legacy | 75 | Setya, Steven Dirga (1808) | Won 2-0 | +231566 |
| 10legacy | 42 | Kawara, Hiroshi (1562) | Won 2-1 | +181584 |
| 11legacy | 21 | Matsumoto, Kazuma 0580 (1624) | Lost 0-2 | -171567 |
| 12legacy | 61 | Harane, Kenta (1928) | Lost 0-2 | -121555 |
| 13legacy | 115 | Suzuki, Takuto (1684) | Lost 0-2 | -151540 |
| 14legacy | 177 | Shirakawa, Hiroaki (1528) | Won 2-1 | +171557 |
| 15legacy | 126 | Nakahara, Yasuhiro (1637) | Lost 1-2 | -161541 |
| top | average opponent: 1633record: 9-5-1 | new rating: 1541 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 563 | Amano, Seiichi (1481) | Lost 0-1 | -181438 |
| 2standard | 826 | Miyanishi, Makoto (1472) | Lost 1-2 | -171421 |
| 3standard | 915 | Saishu, Hiroaki (1331) | Won 2-0 | +161437 |
| 4standard | 815 | Kanamori, Mizuki (1480) | Won 2-0 | +191456 |
| 5standard | 820 | Matsuo, Hirokazu (1541) | Lost 0-2 | -171439 |
| top | average opponent: 1461record: 2-3 | new rating: 1439 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 154 | Sakurada, Kouichi (1583) | Lost 0-2 | -161452 |
| 2standard | 347 | Suzuki, Shoichi (1482) | Lost 1-2 | -171435 |
| 3standard | 372 | Oosaka, Yuusuke (1467) | Lost 1-2 | -171418 |
| 4standard | 378 | Yagimoto, Ken (1444) | Won 2-1 | +181436 |
| 5standard | 316 | Tateno, Tomoaki (1466) | Won 2-0 | +191455 |
| 6standard | 261 | Yoshimori, Sho (1483) | Lost 1-2 | -181437 |
| 7standard | 107 | Nagata, Tsutomu (1465) | Won 2-0 | +191456 |
| top | average opponent: 1484record: 3-4 | new rating: 1456 | ||
| Grand Prix Kyoto 2007 (PLC standard) | starting rating: 1458 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 65 | Hayashi, Masahito (1538) | Lost 0-2 | -161442 |
| 3standard | 140 | Matsuyama, Hikaru (1492) | Won 2-1 | +191461 |
| 4standard | 122 | Oonishi, Hiroaki (1522) | Won 2-0 | +191480 |
| 5standard | 154 | Hashimoto, Yuu (1603) | Lost 1-2 | -161464 |
| 6standard | 173 | Takeda, Takamichi (1587) | Won 2-0 | +201484 |
| 7standard | 121 | Kuraoka, Satoshi (1533) | Lost 1-2 | -171467 |
| 8standard | 150 | Kou, Changsu (1505) | Won 2-0 | +191486 |
| 9standard | 92 | Shimono, Tetsuro (1519) | Lost 1-2 | -181468 |
| top | average opponent: 1537record: 4-4 | new rating: 1468 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 258 | Inanaga, Nobuyuki (1487) | Lost 1-2 | -181498 |
| 2standard | 341 | Sugita, Toshihiko (1445) | Lost 0-2 | -191479 |
| 3standard | 389 | Tanabe, Kazuya (1342) | Lost 0-2 | -211458 |
| top | average opponent: 1424record: 0-3 | new rating: 1458 | ||
| Grand Prix Okayama 2004 (extended) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 19 | Nakashiro, Mizuki (1538) | Lost 0-2 | -181520 |
| 2extended | 147 | Aoki, Masanori (1417) | Lost 0-2 | -201500 |
| 3extended | 167 | Sugita, Toshihiko (1478) | Won 2-1 | +181518 |
| 4extended | 167 | Kuraoka, Shintarou (1479) | Won 2-0 | +171535 |
| 5extended | 142 | Fukuda, Takashi (1478) | Lost 1-2 | -191516 |
| top | average opponent: 1478record: 2-3 | new rating: 1516 | ||
| Grand Prix Sapporo 2002 (Odyssey block) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 83 | Yorifuji, Hideyuki (1500) | Lost 1-2 | -181501 |
| 2block | 147 | Ito, Nobuhiro (1482) | Lost 1-2 | -191482 |
| 3block | 202 | Takiue, Satoshi (1447) | Won 2-1 | +181500 |
| 4block | 184 | Yamaguchi, Masashi (1481) | Won 2-1 | +171517 |
| 5block | 118 | Yasuda, Masaaki (Fukushima) (1465) | Won 2-0 | +171534 |
| 6block | 109 | Higaki, Takao (1765) | Lost 0-2 | -131521 |
| 7block | 103 | Washio, Kazuhiro (1501) | Won 2-1 | +171538 |
| top | average opponent: 1520record: 4-3 | new rating: 1538 | ||
| Grand Prix Kobe 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 3 | Tabuchi, Kazuyuki (1500) | Lost 0-2 | -181482 |
| 2block | 565 | Ohara, Akihiro (1532) | Won 2-0 | +191501 |
| 3block | 311 | Ushie, Yuuta (1500) | Won 2-1 | +181519 |
| 4block | 193 | Isobe, Teruhiko (1519) | Lost 1-2 | -181501 |
| 5block | 390 | Kawasaki, Yasuhiro (1481) | Won 2-1 | +181519 |
| 6block | 352 | Yoshida, Takaaki (Tokyo) (1519) | Won 2-0 | +181537 |
| 7block | 214 | Tanaka, Kenichi (1537) | Won 2-0 | +181555 |
| 8block | 95 | Yamasaki, Rintarou (1590) | Lost 1-2 | -181537 |
| 9block | 137 | Ogata, Kosaku (1533) | Lost 0-2 | -181519 |
| top | average opponent: 1523record: 5-4 | new rating: 1519 | ||