Sasamoto, Yuko
Current rating: 1475
Record: 34-41-1
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1545 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 751 | Yoshida, Yutaka (1536) | Lost 0-2 | -181527 |
| 4sealed | 847 | Suzuki, Keisuke (1574) | Lost 1-2 | -171510 |
| 5sealed | 938 | Shimizu, Haruo (1576) | Lost 0-2 | -171493 |
| 6sealed | 997 | Arimura, Yuuki (1487) | Lost 1-2 | -181475 |
| top | average opponent: 1544record: 0-4 | new rating: 1475 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 186 | Sakai, Yuuto (1564) | Won 2-1 | +191528 |
| 4standard | 13 | Shimizu, Naoki (1926) | Won 2-0 | +241552 |
| 5standard | 38 | Aizawa, Yuuichi (1656) | Lost 0-2 | -161536 |
| 6standard | 162 | Kubo, Yuuta (1555) | Won 2-1 | +191555 |
| 7standard | 119 | Iwata, Mitsuhiro (1586) | Lost 0-2 | -181537 |
| 8standard | 221 | Yamanaka, Syunnsuke (1550) | Lost 1-2 | -181519 |
| 9standard | 261 | Yukuhiro, Ken (1978) | Won 2-1 | +261545 |
| top | average opponent: 1688record: 4-3 | new rating: 1545 | ||
| Grand Prix Yokohama 2012 (modern) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 206 | Ooishi, Yutaka (1518) | Won 2-0 | +191470 |
| 3modern | 121 | Hitomi, Masaaki (1539) | Lost 0-2 | -161454 |
| 4modern | 429 | Nishi, Yuutarou (1523) | Won 2-0 | +191473 |
| 5modern | 181 | Toda, Hirotsugu (1618) | Won 2-1 | +211494 |
| 6modern | 174 | Abe, Hirofumi (1649) | Won 2-1 | +201514 |
| 7modern | 35 | Yabuta, Junichi (1740) | Won 2-1 | +221536 |
| 8modern | 15 | Nishiwaki, Yuta (1583) | Lost 0-2 | -171519 |
| 9modern | 137 | Chiba, Akio (1939) | Lost 1-2 | -101509 |
| top | average opponent: 1639record: 5-3 | new rating: 1509 | ||
| Grand Prix Hiroshima 2011 (ISD standard) | starting rating: 1376 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 196 | Yanagisawa, Tadahiro (1653) | Won 2-1 | +231399 |
| 2standard | 122 | Aoki, Shingo (1485) | Lost 1-2 | -171382 |
| 3standard | 150 | Ariyoshi, Daisuke (1576) | Won 2-0 | +221404 |
| 4standard | 144 | Miyata, Yuuya (1517) | Lost 1-2 | -161388 |
| 5standard | 225 | Toshiki N., (1506) | Lost 0-2 | -161372 |
| 6standard | 249 | Watanabe, Ryoji (1483) | Won 2-0 | +201392 |
| 7standard | 216 | Fujimori, Masayoshi (1500) | Won 2-1 | +201412 |
| 8standard | 140 | Sakaguchi, Naoki (1488) | Won 2-0 | +191431 |
| 9standard | 115 | Jinbo, Takashi (1539) | Won 2-0 | +201451 |
| top | average opponent: 1527record: 6-3 | new rating: 1451 | ||
| Grand Prix Kobe 2011 (extended) | starting rating: 1423 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 245 | Tanaka, Kouichi (1532) | Lost 0-2 | -161407 |
| 2extended | 264 | Takada, Ryo (1312) | Lost 1-2 | -201387 |
| 3extended | 298 | Shinzawa, Masahito (1463) | Won 2-0 | +201407 |
| 4extended | 235 | M., Hiroshi (1460) | Lost 1-2 | -171390 |
| 5extended | 277 | Takenaka, Rikuhei (1467) | Won 2-1 | +191409 |
| 6extended | 230 | Kodani, Ryousuke (1483) | Lost 0-2 | -171392 |
| 7extended | 193 | Inai, Yutaro (1463) | Lost 1-2 | -161376 |
| top | average opponent: 1454record: 2-5 | new rating: 1376 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1425 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 271 | Oshima, Takeyuki (1500) | Won 2-1 | +191444 |
| 2standard | 154 | Agena, Daiki (1518) | Lost 1-2 | -161428 |
| 3standard | 260 | Sekiguchi, Dan (1498) | Lost 0-2 | -171411 |
| 4standard | 314 | Ushiku, Naoki (1433) | Lost 0-2 | -181393 |
| 5standard | 355 | Moriya, Daisuke (1570) | Won 2-0 | +211414 |
| 6standard | 298 | Ando, Junichi (1407) | Won 2-0 | +181432 |
| 7standard | 234 | Ishikawa, Shou (1722) | Lost 1-2 | -121420 |
| 8standard | 211 | Kamiyama, Daiki (1432) | Won 2-0 | +181438 |
| 9standard | 162 | Shimokobe, Yukihiro (1621) | Lost 1-2 | -151423 |
| top | average opponent: 1523record: 4-5 | new rating: 1423 | ||
| Grand Prix Yokohama 2010 (extended) | starting rating: 1420 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 122 | Kimoto, Keiya (1500) | Draw 1-1 | +11421 |
| 2extended | 286 | Mochizuki, Kazuhiro (1468) | Lost 0-1 | -171404 |
| 3extended | 387 | Hirose, Kazuhiro (1481) | Won 2-0 | +191423 |
| 4extended | 315 | Sekino, Masato (1500) | Won 2-1 | +201443 |
| 5extended | 228 | Takayama, Ryou (1432) | Lost 1-2 | -181425 |
| 6extended | 290 | Yamada, Hiroki (1504) | Won 2-0 | +191444 |
| 7extended | 216 | Takeshita, Yoshiyasu (1383) | Lost 0-2 | -191425 |
| top | average opponent: 1467record: 3-3-1 | new rating: 1425 | ||
| Grand Prix Niigata 2009 (M10 limited) | starting rating: 1426 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 223 | Arai, Jin (1386) | Lost 1-2 | -181408 |
| 2sealed | 214 | Takamizu, Tomohiro (1482) | Won 2-0 | +191427 |
| 3sealed | 248 | Date, Norikuni (1536) | Won 2-1 | +201447 |
| 4sealed | 153 | Sato, Daisuke (1481) | Lost 0-2 | -171430 |
| 5sealed | 190 | Sato, Rei (1607) | Lost 1-2 | -151415 |
| 6sealed | 200 | Terada, Shuuhei (1511) | Lost 0-2 | -171398 |
| 7sealed | 176 | Ogura, Shigeru (1374) | Won 2-1 | +181416 |
| 8sealed | 133 | Nishizawa, Yasuhide (1520) | Lost 1-2 | -161400 |
| 9sealed | 93 | Hori, Daisuke (1494) | Won 2-0 | +201420 |
| top | average opponent: 1488record: 4-5 | new rating: 1420 | ||
| Grand Prix Kobe 2009 (extended) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 52 | Imada, Koji (1446) | Won 2-0 | +181478 |
| 2extended | 7 | Mori, Junpei (1644) | Lost 1-2 | -151463 |
| 3extended | 141 | Kashima, Koji (1436) | Lost 1-2 | -191444 |
| 4extended | 226 | Nishimoto, Takuya (1389) | Lost 0-2 | -191425 |
| 5extended | 234 | Yamamoto, Yasutomo (1380) | Lost 1-2 | -191406 |
| 6extended | 199 | Kunimoto, Ryuuichi (1482) | Won 2-0 | +201426 |
| 7extended | 101 | Tomizawa, Yuusuke (1445) | Lost 0-2 | -181408 |
| 8extended | 76 | Yamano, Tatsuto (1413) | Won 2-1 | +181426 |
| top | average opponent: 1454record: 3-5 | new rating: 1426 | ||
| Grand Prix Kobe 2008 (Lorwyn block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 45 | Asano, Jun'ya (1500) | Lost 1-2 | -181482 |
| 2block | 256 | kishimoto, tatsuya (1471) | Lost 1-2 | -181464 |
| 3block | 309 | Shimizu, Takuya (1429) | Lost 1-2 | -191445 |
| 4block | 365 | Yonekura, Kazuyoshi (1446) | Won 2-0 | +181463 |
| 5block | 319 | Suzuki, Sadao (1303) | Lost 0-2 | -211442 |
| 6block | 292 | Iwata, Sho (1445) | Won 2-0 | +181460 |
| 7block | 232 | Einoo, Takafumi (1463) | Won 2-1 | +181478 |
| 8block | 188 | Masui, Noriaki (1460) | Lost 1-2 | -181460 |
| top | average opponent: 1440record: 3-5 | new rating: 1460 | ||