Kusumi, Kousei
Current rating: 1287
Record: 21-43
| Grand Prix Yokohama 2019 (modern) | starting rating: 1321 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 512 | Kihara, Kazunari (1452) | Lost 0-2 | -161305 |
| 2modern | 846 | Tian, Yushi (1481) | Lost 0-2 | -151290 |
| 3modern | 1136 | Haraguchi, Mizuki (1491) | Lost 1-2 | -141276 |
| 4modern | 1150 | Murayama, Kouhei (1443) | Won 2-1 | +211297 |
| 5modern | 1011 | Satou, Kentarou (1393) | Won 2-0 | +201317 |
| 6modern | 746 | Kaneta, Takaaki (1546) | Lost 0-2 | -141303 |
| 7modern | 803 | Ng, Don (1419) | Lost 0-2 | -161287 |
| top | average opponent: 1461record: 2-5 | new rating: 1287 | ||
| Grand Prix Kobe 2017 (modern) | starting rating: 1229 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 636 | Shirahata, Gen (1493) | Lost 1-2 | -131216 |
| 2modern | 915 | Hagishima, Daijiro (1411) | Won 2-0 | +211237 |
| 3modern | 979 | Kitabayashi, Nobuyuki (1489) | Lost 1-2 | -131224 |
| 4modern | 1209 | Ueda, Erison (1464) | Won 2-1 | +221246 |
| 5modern | 673 | Yanaseko, Kentarou (1598) | Won 2-1 | +241270 |
| 6modern | 747 | Sasaki, Ryouta (1550) | Won 2-1 | +231293 |
| 7modern | 570 | Torii, Motonori (1485) | Won 2-1 | +221315 |
| 8modern | 350 | Takahashi, Ryo 3906 (1823) | Lost 0-2 | -101305 |
| 9modern | 511 | Sun, Kuangda (1620) | Lost 1-2 | -121293 |
| 10modern | 339 | Banno, Kunihiko (1578) | Lost 0-2 | -131280 |
| 11modern | 327 | Bang, Sangmun (1534) | Lost 1-2 | -131267 |
| 12modern | 341 | Gen, Takatoshi (1447) | Won 2-1 | +211288 |
| 13modern | 290 | Ishihara, Atsushi (1638) | Lost 0-2 | -121276 |
| 14modern | 256 | Kwon, Ohhyek (1525) | Won 2-0 | +221298 |
| 15modern | 229 | Kazimoto, Atushi (1544) | Won 2-1 | +231321 |
| top | average opponent: 1546record: 8-7 | new rating: 1321 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1233 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 309 | Hosokawa, Shun'ya (1458) | Lost 0-2 | -141219 |
| 2modern | 326 | Furuuchi, Kaoru (1482) | Won 2-0 | +231242 |
| 3modern | 363 | Makie, Kouichi (1472) | Won 2-0 | +221264 |
| 4modern | 290 | Takada, Hiroki (1516) | Won 2-1 | +231287 |
| 5modern | 120 | Maeda, Yasunobu (1537) | Lost 0-2 | -141273 |
| 6modern | 317 | Okamoto, Ryosuke (1505) | Lost 1-2 | -141259 |
| 7modern | 290 | Munekata, Masafumi (1421) | Lost 0-2 | -151244 |
| 8modern | 311 | Nakai, Ryoji (1418) | Lost 0-2 | -151229 |
| top | average opponent: 1476record: 3-5 | new rating: 1229 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1296 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 12 | Kondo, Masahiro (1521) | Won 2-1 | +221318 |
| 2standard | 95 | Ogawa, Yusuke (1484) | Lost 0-2 | -151303 |
| 3standard | 322 | Ishii, Masashi (1422) | Lost 0-2 | -161287 |
| 4standard | 312 | Takawashi, Kenji (1483) | Won 2-1 | +221309 |
| 5standard | 256 | Shiraishi, Shinji (1420) | Lost 1-2 | -161293 |
| 6standard | 269 | Harada, Hiroshi (1459) | Lost 0-2 | -151278 |
| 7standard | 256 | Tanahashi, Hirofumi (1457) | Lost 1-2 | -151263 |
| 8standard | 228 | Yago, Taisei (1450) | Lost 0-2 | -151248 |
| 9standard | 357 | Nagaya, Norimasa (1410) | Lost 1-2 | -151233 |
| top | average opponent: 1456record: 2-7 | new rating: 1233 | ||
| Grand Prix Kitakyushu 2013 (M14 standard) | starting rating: 1363 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 130 | Kawazoe, Keiichi (1516) | Won 2-1 | +211384 |
| 2standard | 238 | Kim, Jae-hong (1518) | Lost 0-2 | -161368 |
| 3standard | 378 | Sato, Takatoshi (1606) | Lost 1-2 | -131355 |
| 4standard | 441 | Tsukanishi, Toshiyuki (1527) | Lost 0-2 | -151340 |
| 5standard | 479 | Yamada, Yoshiaki (1468) | Lost 1-2 | -161324 |
| 6standard | 465 | Teramoto, Tatsuya (1447) | Lost 0-2 | -161308 |
| 7standard | 410 | Harada, Akio (1381) | Lost 0-2 | -161292 |
| 8standard | 350 | Fujino, Mai (1410) | Won 2-0 | +201312 |
| 9standard | 301 | Yoshida, Shohei (1432) | Lost 0-2 | -161296 |
| top | average opponent: 1478record: 2-7 | new rating: 1296 | ||
| Grand Prix Nagoya 2012 (RTR standard) | starting rating: 1405 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 364 | Ito, Hayato (1511) | Lost 0-2 | -161389 |
| 2standard | 651 | Hujihira, Kouhei (1482) | Won 2-1 | +201409 |
| 3standard | 438 | Ito, Masahiro (1520) | Lost 0-2 | -161393 |
| 4standard | 653 | Matoba, Keisuke (1482) | Lost 1-2 | -161377 |
| 5standard | 675 | Hiroyuki N., (1464) | Won 2-1 | +191396 |
| 6standard | 592 | Ono, Kotaro (1481) | Lost 0-2 | -161380 |
| 7standard | 529 | Niwa, Ryuuta (1461) | Lost 1-2 | -171363 |
| top | average opponent: 1486record: 2-5 | new rating: 1363 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 22 | Okuya, Yoshihito (1500) | Lost 1-2 | -181482 |
| 2standard | 333 | Mizutani, Yuki (1434) | Lost 0-2 | -191463 |
| 3standard | 377 | Moriyama, Masahiro (1319) | Lost 0-2 | -201443 |
| 4standard | 424 | Sato, Hitoshi (1435) | Won 2-1 | +171460 |
| 5standard | 354 | Tanahashi, Hirofumi (1392) | Lost 0-2 | -191441 |
| 6standard | 340 | Kishimoto, Hiromichi (1405) | Lost 0-2 | -191422 |
| 7standard | 288 | Abe, Kouichi (1464) | Lost 0-2 | -171405 |
| 8standard | 238 | Hasegawa, Kazuhiko (1390) | Lost 1-2 | -181387 |
| 9standard | 191 | Suzuki, Tomotarou (1409) | Won 2-1 | +181405 |
| top | average opponent: 1416record: 2-7 | new rating: 1405 | ||