Sonohara, Takashi
Current rating: 1324
Record: 17-31
| Grand Prix Nagoya 2020 (pioneer) | starting rating: 1314 | |||
| round | table | opponent (rating) | result | Δrating |
| 1pioneer | 152 | Kawamura, Rikiya (1567) | Lost 0-2 | -131301 |
| 2pioneer | 447 | Tanahashi, Toshiki (1486) | Won 2-1 | +211322 |
| 3pioneer | 737 | Hasegawa, Tsuneyuki (1267) | Won 2-0 | +171339 |
| 4pioneer | 593 | Nakajima, Hajime (1488) | Lost 1-2 | -151324 |
| top | average opponent: 1452record: 2-2 | new rating: 1324 | ||
| Grand Prix Nagoya 2019 (ELD standard) | starting rating: 1361 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 173 | Chen, Mingyu (1500) | Lost 1-2 | -151346 |
| 2standard | 448 | Ohshima, Yuichi (1503) | Lost 0-2 | -151331 |
| 3standard | 780 | Shimokawabe, Akinari (1411) | Lost 0-2 | -171314 |
| top | average opponent: 1471record: 0-3 | new rating: 1314 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1391 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 506 | Lu, Bingqing (1525) | Lost 1-2 | -151376 |
| 2standard | 739 | Kobayashi, Shuhei (1482) | Won 2-1 | +201396 |
| 3standard | 807 | Yasufuku, Akihiro (1450) | Lost 1-2 | -171379 |
| 4standard | 943 | Morita, Kazuki (1418) | Lost 1-2 | -181361 |
| top | average opponent: 1469record: 1-3 | new rating: 1361 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1377 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 185 | Kobayashi, Daisuke (1423) | Lost 1-2 | -171360 |
| 2modern | 891 | Nishida, Keisuke (1533) | Lost 0-2 | -151345 |
| 3modern | 1220 | Yanagizawa, Kazutoyo (1334) | Won 2-0 | +181363 |
| 4modern | 1105 | Abe, Masanori (1482) | Won 2-1 | +201383 |
| 5modern | 915 | Usami, Taro (1736) | Won 2-1 | +241407 |
| 6modern | 565 | Uryu, Shintaro (1518) | Lost 1-2 | -161391 |
| top | average opponent: 1504record: 3-3 | new rating: 1391 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1424 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 172 | Sakai, Shigeto (1426) | Lost 0-2 | -181406 |
| 2standard | 658 | Miyake, Hideyuki (1513) | Lost 0-2 | -161390 |
| 3standard | 1272 | Watanabe, Keita (1533) | Won 2-0 | +211411 |
| 4standard | 1017 | Nanba, Yoshinori (1483) | Lost 1-2 | -171394 |
| 5standard | 1216 | Tokunaga, Takayuki (1461) | Lost 1-2 | -171377 |
| top | average opponent: 1483record: 1-4 | new rating: 1377 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1440 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 603 | Kobayasi, Tomoya (1464) | Lost 0-2 | -181422 |
| 2legacy | 791 | Mizutani, Akitoshi (1428) | Won 2-1 | +181440 |
| 3legacy | 865 | Sugiyama, Takumi (1500) | Lost 1-2 | -171423 |
| 4legacy | 841 | Kato, Kazuyuki (1398) | Won 2-1 | +181441 |
| 5legacy | 804 | Izawa, Kagekatsu (1501) | Lost 1-2 | -171424 |
| top | average opponent: 1458record: 2-3 | new rating: 1424 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1456 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 887 | Yanagisawa, Makoto (1448) | Lost 1-2 | -181438 |
| 2modern | 1100 | Tomioka, Yoshihiro (1481) | Won 2-1 | +181456 |
| 3modern | 954 | Nakamura, Keisuke (1534) | Lost 1-2 | -161440 |
| top | average opponent: 1488record: 1-2 | new rating: 1440 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 120 | Yuasa, Kentarou (1640) | Won 2-1 | +221439 |
| 2standard | 43 | Ishikawa, Keisuke (1541) | Won 2-0 | +201459 |
| 3standard | 122 | Sasayama, Shin (1483) | Won 2-0 | +191478 |
| 4standard | 21 | Kawamura, Kazushi (1786) | Lost 1-2 | -131465 |
| 5standard | 179 | Kubota, Yuuhi (1836) | Won 2-1 | +251490 |
| 6standard | 98 | Hirata, Koutatsu (1487) | Lost 0-2 | -181472 |
| 7standard | 113 | Kurusu, Kazuki (1596) | Lost 1-2 | -161456 |
| top | average opponent: 1624record: 4-3 | new rating: 1456 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 318 | Inoue, Kota (1500) | Won 2-1 | +191449 |
| 2standard | 187 | Shimada, Atsuki (1630) | Lost 0-2 | -151434 |
| 3standard | 414 | Watanabe, Masashi (1500) | Lost 1-2 | -171417 |
| top | average opponent: 1543record: 1-2 | new rating: 1417 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1485 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 307 | Toma, Naoyuki (1500) | Lost 0-2 | -181467 |
| 2sealed | 416 | Kubomura, Masaaki (1384) | Lost 0-2 | -201447 |
| 3sealed | 448 | Iwamizu, Kendou (1464) | Lost 1-2 | -171430 |
| top | average opponent: 1449record: 0-3 | new rating: 1430 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 212 | Nagai, Takahiro (1540) | Lost 0-2 | -171483 |
| 2standard | 349 | Ariyoshi, Daisuke (1523) | Won 2-1 | +181501 |
| 3standard | 288 | Katayose, Shingo (1621) | Lost 1-2 | -151486 |
| 4standard | 277 | Kimura, Shigeki (1445) | Won 2-0 | +171503 |
| 5standard | 220 | Yoshikawa, Yuta (1484) | Lost 0-2 | -181485 |
| top | average opponent: 1522record: 2-3 | new rating: 1485 | ||