Usami, Koji
Current rating: 1344
Record: 11-25-4
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1276 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 82 | Kobayashi, Hironori (1464) | Won 2-1 | +211297 |
| 3sealed | 375 | Yamasaki, Yuuta (1475) | Won 2-0 | +221319 |
| 4sealed | 71 | Takao, Akinao (1706) | Lost 1-2 | -121307 |
| 5sealed | 397 | Shibata, Toru (1678) | Won 2-1 | +251332 |
| 6sealed | 242 | Naitou, Keisuke (1698) | Lost 1-2 | -121320 |
| 7sealed | 346 | Nomura, Tsuyoshi (1824) | Won 2-0 | +271347 |
| 8sealed | 233 | Ookura, Yasuhiro (1596) | Won 2-0 | +221369 |
| 9sealed | 124 | Nishimura, Kazuhiro (1583) | Lost 0-2 | -141355 |
| 10draft | 50 | Nagao, Yasutaka (1792) | Lost 0-2 | -111344 |
| top | average opponent: 1646record: 5-4 | new rating: 1344 | ||
| Grand Prix Kyoto 2019 (RNA standard) | starting rating: 1323 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 10 | Hiraoka, Shigenori (1369) | Lost 0-2 | -171306 |
| 3standard | 765 | Makino, Takahito (1411) | Lost 0-2 | -161290 |
| 4standard | 696 | Hiroyama, Tomoki (1508) | Lost 0-2 | -141276 |
| top | average opponent: 1430record: 0-3 | new rating: 1276 | ||
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1314 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 225 | Aoshima, Satoshi (1412) | Lost 0-2 | -161298 |
| 2standard | 784 | Tedori, Kota (1579) | Lost 0-2 | -131285 |
| 3standard | 1094 | Sawada, Tetsushi (1606) | Won 2-0 | +231308 |
| 4standard | 912 | Amada, Michio (1465) | Lost 0-2 | -151293 |
| 5standard | 985 | Nagata, Satoshi (1450) | Draw 1-1 | +31296 |
| 6standard | 887 | Chang, Hui-Liang (1465) | Draw 0-0 | +31299 |
| 7standard | 804 | Ishikawa, Shigeru (1443) | Won 2-0 | +211320 |
| 8standard | 706 | Setsompop, Mingrerk (1520) | Draw 0-0 | +31323 |
| top | average opponent: 1493record: 2-3-3 | new rating: 1323 | ||
| Grand Prix Shizuoka 2018 (legacy) (legacy) | starting rating: 1370 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 3 | Ono, Kotaro (1523) | Lost 1-2 | -151355 |
| 2legacy | 573 | Mizuno, Masahito (1565) | Lost 0-2 | -141341 |
| 3legacy | 680 | Shimazu, Yoshiki (1577) | Lost 0-2 | -141327 |
| 4legacy | 647 | Kubo, Haruki (1380) | Lost 1-2 | -171310 |
| 5legacy | 646 | Nakagawa, Natsuki (1430) | Won 2-1 | +201330 |
| 6legacy | 579 | Ishikawa, Takuma (1311) | Lost 1-2 | -181312 |
| 7legacy | 500 | Moriya, Taiki (1430) | Draw 0-0 | +21314 |
| top | average opponent: 1459record: 1-5-1 | new rating: 1314 | ||
| Grand Prix Chiba 2018 (M19 limited) | starting rating: 1462 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 176 | Washida, Hiroshi (1549) | Lost 0-2 | -171445 |
| 2sealed | 726 | Tanaka, Nobuaki (1408) | Lost 0-2 | -181427 |
| 3sealed | 1131 | Honjo, Kiyotaka (1267) | Lost 0-2 | -211406 |
| 4sealed | 1112 | Sasaki, Ken (1484) | Lost 1-2 | -171389 |
| 5sealed | 1023 | Ogura, Shigeru (1332) | Lost 1-2 | -191370 |
| top | average opponent: 1408record: 0-5 | new rating: 1370 | ||
| Grand Prix Shizuoka 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 90 | Fujikawa, Takashi (1315) | Won 2-1 | +151515 |
| 2standard | 111 | Kawai, Yusuke (1520) | Lost 1-2 | -181497 |
| 3standard | 842 | Takahashi, Muneaki (1409) | Won 2-1 | +161513 |
| 4standard | 778 | Kan, Kensei (1468) | Won 2-1 | +171530 |
| 5standard | 542 | Kutsuna, Yohei (1479) | Lost 1-2 | -191511 |
| 6standard | 562 | Hata, Hideaki (1598) | Lost 0-2 | -161495 |
| 7standard | 949 | Takaya, Maruta (1500) | Lost 0-2 | -181477 |
| 8standard | 783 | Onishi, Kouhei (1624) | Lost 0-2 | -151462 |
| top | average opponent: 1489record: 3-5 | new rating: 1462 | ||