Sakai, Takashi
Current rating: 1408
Record: 22-29-2
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1421 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 522 | Yonaha, Syoryu (1500) | Won 2-0 | +201441 |
| 2standard | 588 | Ohta, Show (1499) | Won 2-1 | +191460 |
| 3standard | 351 | Yamade, Masato (1507) | Lost 1-2 | -171443 |
| 4standard | 524 | Matsuura, Gen (1449) | Lost 1-2 | -181425 |
| 5standard | 883 | Kaihara, Shunsuke (1511) | Lost 1-2 | -171408 |
| top | average opponent: 1493record: 2-3 | new rating: 1408 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1410 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 66 | Konuma, Mizuki (1500) | Won 2-0 | +201430 |
| 2sealed | 500 | Yamada, Junki (1463) | Won 2-1 | +181448 |
| 3sealed | 252 | Hada, Nobuto (1776) | Lost 1-2 | -121436 |
| 4sealed | 530 | Kondo, Hirotsugu (1439) | Lost 1-2 | -181418 |
| 5sealed | 645 | Inagaki, Yukihiro (1518) | Lost 0-2 | -161402 |
| 6sealed | 780 | Shinohara, Gen 8933 (1485) | Won 2-0 | +191421 |
| top | average opponent: 1530record: 3-3 | new rating: 1421 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1437 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 373 | Sawada, Kiyohito (1500) | Draw 1-1 | +11438 |
| 2standard | 597 | Hara, Tomoki (1464) | Won 2-0 | +191457 |
| 3standard | 693 | Konndou, Hiromi (1501) | Lost 0-2 | -171440 |
| 4standard | 920 | Ohta, Show (1503) | Won 2-0 | +191459 |
| 5standard | 628 | Suzuki, Shuho (1668) | Lost 1-2 | -141445 |
| 6standard | 833 | Katou, Youdai (1561) | Lost 1-2 | -161429 |
| 7standard | 963 | Kobayashi, Masakatsu (1390) | Lost 1-2 | -191410 |
| top | average opponent: 1512record: 2-4-1 | new rating: 1410 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 176 | Moriwaki, Takuya (1463) | Draw 1-1 | 01434 |
| 2standard | 763 | Takeuchi, Hiroto (1536) | Won 1-0 | +201454 |
| 3standard | 758 | Matsubara, Akifumi (1518) | Lost 0-2 | -171437 |
| top | average opponent: 1506record: 1-1-1 | new rating: 1437 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 408 | Simada, Sou (1500) | Lost 1-2 | -181452 |
| 2sealed | 890 | Onodera, Takumi (1418) | Lost 0-2 | -181434 |
| top | average opponent: 1459record: 0-2 | new rating: 1434 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1047 | Suzuki, Tatsuya (1454) | Won 2-0 | +171503 |
| 2sealed | 957 | Miyake, Ryohei (1515) | Lost 1-2 | -181485 |
| 3sealed | 1242 | Taya, Kentaro (1629) | Lost 0-2 | -151470 |
| top | average opponent: 1533record: 1-2 | new rating: 1470 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 762 | Katou, Yuuta (1518) | Won 2-0 | +181521 |
| 3sealed | 663 | Konno, Tomoyuki (1491) | Lost 0-2 | -181503 |
| 4sealed | 823 | Nogami, Kazuki (1517) | Lost 0-2 | -181485 |
| 5sealed | 875 | Iwata, Futoshi (1574) | Won 2-1 | +201505 |
| 6sealed | 758 | Sugiyama, Syun (1448) | Lost 0-2 | -191486 |
| top | average opponent: 1510record: 2-3 | new rating: 1486 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1539 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 733 | Yano, Ryuji (1578) | Lost 1-2 | -171522 |
| 2standard | 781 | Omi, Tatsuya (1478) | Lost 1-2 | -191503 |
| top | average opponent: 1528record: 0-2 | new rating: 1503 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1580 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 206 | Isowaki, Naoto (1518) | Lost 1-2 | -191561 |
| 3sealed | 312 | Hiroki, Tanaka (1500) | Lost 0-2 | -191542 |
| 4sealed | 394 | Mishio, Takenori (1483) | Won 2-0 | +171559 |
| 5sealed | 248 | Yakushi, Hideki (1465) | Lost 1-2 | -201539 |
| top | average opponent: 1491record: 1-3 | new rating: 1539 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 182 | Okabayashi, Masanao (1587) | Won 2-0 | +201520 |
| 2standard | 314 | Iwata, Takahiro (1519) | Won 2-1 | +181538 |
| 3standard | 302 | Higuchi, Kazuya (1435) | Won 2-1 | +161554 |
| 4standard | 205 | Ino, Kentaro (1828) | Lost 0-2 | -131541 |
| 5standard | 202 | Kimura, Shigeki (1490) | Won 2-1 | +171558 |
| 6standard | 111 | Kanekiyo, Ryusuke (1516) | Won 2-1 | +171575 |
| 7standard | 80 | Oomura, Junya (1574) | Won 2-0 | +181593 |
| 8standard | 25 | Nakatani, Hiroki (1584) | Lost 0-2 | -181575 |
| 9standard | 80 | Suzuki, Ryo (1510) | Won 2-0 | +171592 |
| 10standard | 85 | Farnung, Ian (1858) | Lost 0-2 | -141578 |
| 11standard | 96 | Mizuno, Kunihiko (1533) | Won 2-0 | +171595 |
| 12standard | 82 | Iwamoto, Nobuyuki (1643) | Lost 1-2 | -171578 |
| 13standard | 74 | Takesue, Chikara (1702) | Won 0-0 | +211599 |
| 14standard | 69 | Matsubara, Tohru (1576) | Won 2-1 | +171616 |
| 15standard | 40 | Sakimura, Akihiko (1677) | Lost 1-2 | -171599 |
| 16standard | 63 | Kato, Akinori (1538) | Lost 1-2 | -191580 |
| top | average opponent: 1598record: 10-6 | new rating: 1580 | ||