Sasaki, Masaya
Current rating: 1364
Record: 29-47-2
Grand Prix Nagoya 2004Grand Prix Yamagata 2006Grand Prix Shizuoka 2008Grand Prix Kobe 2008Grand Prix Niigata 2009Grand Prix Yokohama 2010Grand Prix Kobe 2011Grand Prix Kobe 2012Grand Prix Taipei 2012Grand Prix Kitakyushu 2013Grand Prix Kobe 2014Grand Prix Shizuoka 2015Grand Prix Kyoto 2015Grand Prix Chiba 2015Grand Prix Kobe 2015
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1340 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 342 | Tsuzuki, Makoto (1514) | Won 2-0 | +221362 |
| 2standard | 525 | Atsumi, Yoshihiro (1508) | Won 2-1 | +201382 |
| 3standard | 250 | Tanji, Kensuke (1574) | Lost 0-2 | -141368 |
| 4standard | 442 | Tabata, Yuusuke (1608) | Won 2-0 | +221390 |
| 5standard | 482 | Endo, Akiteru (1599) | Lost 0-2 | -141376 |
| 6standard | 539 | Irimura, Daisuke (1703) | Lost 1-2 | -121364 |
| top | average opponent: 1584record: 3-3 | new rating: 1364 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1348 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 416 | Kamiya, Kazuhiro (1417) | Won 2-1 | +191367 |
| 2sealed | 181 | Tanaka, Fumiya (1518) | Lost 1-2 | -151352 |
| 3sealed | 493 | Maejima, Yuya (1487) | Won 2-0 | +201372 |
| 4sealed | 217 | Nakamura, Takehiro (1474) | Lost 1-2 | -161356 |
| 5sealed | 343 | Nakamura, Yuki 8131 (1487) | Lost 0-2 | -161340 |
| top | average opponent: 1477record: 2-3 | new rating: 1340 | ||
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1363 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 249 | Fujii, Osamu (1500) | Lost 0-2 | -151348 |
| top | record: 0-1 | new rating: 1348 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1368 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 319 | Tamai, Yuno (1512) | Won 2-1 | +211389 |
| 2sealed | 85 | Kondou, Masayoshi (1574) | Lost 1-2 | -151374 |
| 3sealed | 328 | Hagiya, Ginga (1508) | Won 2-0 | +211395 |
| 4sealed | 135 | Fujikura, Reon (1463) | Lost 0-2 | -171378 |
| 5sealed | 330 | Iwazaki, Yuuta (1568) | Lost 0-2 | -151363 |
| top | average opponent: 1525record: 2-3 | new rating: 1363 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1342 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 60 | Moriya, Ryo (1375) | Won 2-1 | +191361 |
| 4modern | 121 | Takimura, Kazuyuki (1791) | Lost 1-2 | -111350 |
| 5modern | 91 | Naka, Hidehiro (1525) | Won 2-0 | +211371 |
| 6modern | 152 | Akiyama, Hiroki (1554) | Won 2-0 | +211392 |
| 7modern | 113 | Tamada, Ryoichi (1783) | Lost 0-2 | -111381 |
| 8modern | 189 | Koyanagi, Takuya (1667) | Lost 0-2 | -131368 |
| top | average opponent: 1616record: 3-3 | new rating: 1368 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1382 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 99 | Nishitani, Yutaka (1485) | Lost 0-2 | -161366 |
| 4standard | 327 | Tsuda, Mineyuki (1673) | Won 2-0 | +231389 |
| 5standard | 111 | Park, Jong Sun (1496) | Lost 0-2 | -161373 |
| 6standard | 338 | Arai, Kenichiro (1647) | Lost 1-2 | -131360 |
| 7standard | 290 | Kamiya, Kazuhiro (1372) | Lost 1-2 | -181342 |
| 8standard | 324 | Matsumura, Takehiko (1392) | Lost 0-2 | -171325 |
| 9standard | 277 | Ikeda, Naoto (1259) | Won 2-0 | +171342 |
| top | average opponent: 1475record: 2-5 | new rating: 1342 | ||
| Grand Prix Taipei 2012 (RTR limited) | starting rating: 1356 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 32 | Lin, Yen-Chen (1556) | Won 2-1 | +221378 |
| 5sealed | 47 | Jeong, Won Jun (1487) | Won 2-1 | +201398 |
| 6sealed | 22 | Ku, Philip (1587) | Won 2-1 | +211419 |
| 7sealed | 6 | Lee, Sung-Bum (1609) | Lost 1-2 | -141405 |
| 8sealed | 11 | Yukuhiro, Ken (2027) | Lost 0-2 | -81397 |
| 9sealed | 30 | Sun, Xueli (1575) | Lost 1-2 | -151382 |
| top | average opponent: 1640record: 3-3 | new rating: 1382 | ||
| Grand Prix Kobe 2012 (DKA limited) | starting rating: 1357 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 187 | Furukawa, Takehito (1500) | Won 2-0 | +201377 |
| 2sealed | 293 | Nakano, Yoshitaka (1854) | Lost 1-2 | -101367 |
| 3sealed | 340 | Hayata, Akira (1518) | Lost 1-2 | -151352 |
| 4sealed | 419 | Imamura, Taichirou (1518) | Won 2-1 | +211373 |
| 5sealed | 305 | Hashimoto, Masatoshi (1447) | Lost 1-2 | -171356 |
| top | average opponent: 1567record: 2-3 | new rating: 1356 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1335 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 124 | Watanabe, Akinori (1500) | Draw 1-1 | +31338 |
| 2extended | 169 | Yanagisawa, Tadahiro (1665) | Lost 0-2 | -121326 |
| 3extended | 244 | Kurachi, Yuuya (1426) | Won 1-0 | +201346 |
| 4extended | 214 | Mita, Shohei (1502) | Won 1-0 | +211367 |
| 5extended | 154 | Ito, Shinichi (1514) | Lost 0-2 | -161351 |
| 6extended | 202 | Naito, Yuuki (1502) | Won 1-0 | +211372 |
| 7extended | 149 | Y., Koutarou (1516) | Lost 1-2 | -151357 |
| top | average opponent: 1518record: 3-3-1 | new rating: 1357 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1379 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 114 | Urita, Youhei (1500) | Lost 0-2 | -161363 |
| 2extended | 453 | Muranaka, Hiroya (1523) | Lost 0-2 | -151348 |
| 3extended | 429 | Neo, Alvin (1530) | Won 2-0 | +211369 |
| 4extended | 423 | Moriyama, Masahiro (1344) | Lost 0-2 | -181351 |
| 5extended | 418 | Matsumura, Takehiko (1485) | Lost 0-2 | -161335 |
| top | average opponent: 1476record: 1-4 | new rating: 1335 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1427 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 41 | Kuze, Shouta (1632) | Lost 1-2 | -141413 |
| 2sealed | 252 | Tamura, Youhei (1467) | Lost 0-2 | -171396 |
| 3sealed | 277 | Yoshimura, Naoto (1461) | Lost 0-2 | -171379 |
| top | average opponent: 1520record: 0-3 | new rating: 1379 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1420 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 146 | Inatsugu, Takahiro (1504) | Won 2-1 | +201440 |
| 2block | 116 | Saitou, Kazuya (1337) | Won 2-0 | +161456 |
| 3block | 123 | Aiba, Takashi (1536) | Lost 1-2 | -171439 |
| 4block | 152 | Toda, Masaaki (1484) | Lost 1-2 | -171422 |
| 5block | 275 | Tabata, Hiroshi (1485) | Won 2-0 | +191441 |
| 6block | 210 | Hirata, Minoru (1641) | Lost 1-2 | -141427 |
| top | average opponent: 1498record: 3-3 | new rating: 1427 | ||
| Grand Prix Shizuoka 2008 (MOR standard) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 73 | Yasutomi, Hiroto (1883) | Lost 0-2 | -111472 |
| 3standard | 221 | Matsumura, Takehiko (1376) | Lost 0-2 | -191453 |
| 4standard | 297 | Nii, Masanobu (1482) | Lost 1-2 | -181435 |
| 5standard | 325 | Yamaguchi, Teruyuki (1614) | Lost 1-2 | -151420 |
| top | average opponent: 1589record: 0-4 | new rating: 1420 | ||
| Grand Prix Yamagata 2006 (TSP limited) | starting rating: 1516 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 60 | Hata, Fumihiro (1577) | Won 2-1 | +191535 |
| 2sealed | 25 | Shouyama, Youhei (1566) | Lost 1-2 | -171518 |
| 3sealed | 99 | Miyajima, Yoshitaka (1594) | Lost 0-2 | -171501 |
| 4sealed | 140 | Hinoura, Mayuko (1516) | Draw 1-1 | +11502 |
| 5sealed | 128 | Asari, Kouzou (1493) | Lost 0-2 | -191483 |
| top | average opponent: 1549record: 1-3-1 | new rating: 1483 | ||
| Grand Prix Nagoya 2004 (5DN standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 238 | Shigeno, Mitsuhiro (1500) | Won 2-0 | +181518 |
| 2standard | 24 | Yamao, Masakura (1482) | Won 2-0 | +171535 |
| 3standard | 86 | Jitsukawa, Naofumi (1595) | Lost 1-2 | -171518 |
| 4standard | 287 | Takemoto, Kousuke (1520) | Won 2-1 | +181536 |
| 5standard | 117 | Akiyama, Takashi (1506) | Lost 0-2 | -181518 |
| 6standard | 166 | Suda, Makoto (1497) | Won 2-0 | +181536 |
| 7standard | 140 | Takamatsu, Hiroomi (1464) | Lost 0-2 | -201516 |
| top | average opponent: 1509record: 4-3 | new rating: 1516 | ||