Kozutsumi, Shin
Current rating: 1492
Record: 15-17
| Grand Prix Shizuoka 2018 (standard) (GRN standard) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 282 | Sugimoto, Shimpei (1450) | Lost 0-2 | -181427 |
| 2standard | 846 | Kurihara, Akihiro (1482) | Won 2-0 | +191446 |
| 3standard | 728 | Yamaguchi, Yuuichi (1643) | Won 2-1 | +211467 |
| 4standard | 581 | Sakai, Tatsuya (1648) | Lost 0-2 | -141453 |
| 5standard | 678 | Mimura, Takeshi (1502) | Lost 0-2 | -171436 |
| 6standard | 864 | Takai, Shunichi (1482) | Won 2-0 | +181454 |
| 7standard | 691 | Hatakeyama, Dai (1503) | Won 2-0 | +191473 |
| 8standard | 571 | Omi, Tatsuya (1514) | Won 2-0 | +191492 |
| top | average opponent: 1528record: 5-3 | new rating: 1492 | ||
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1433 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 875 | Tabako, Daisuke (1500) | Won 2-0 | +191452 |
| 2standard | 623 | Nishinosono, Satoshi (1484) | Lost 0-2 | -171435 |
| 3standard | 1025 | Jimichi, Makoto (1439) | Lost 1-2 | -181417 |
| 4standard | 1399 | Chang, Chieh Sheng (1487) | Won 2-0 | +191436 |
| 5standard | 883 | Oumi, Masatoshi (1492) | Won 2-1 | +191455 |
| 6standard | 629 | Kawabe, Koki (1523) | Won 2-1 | +201475 |
| 7standard | 318 | Sano, Kunihide (1679) | Lost 0-2 | -151460 |
| 8standard | 856 | Ishida, Ryouhei (1603) | Lost 0-2 | -151445 |
| top | average opponent: 1526record: 4-4 | new rating: 1445 | ||
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 385 | Koide, Tomohide (1472) | Won 2-1 | +181465 |
| 2sealed | 430 | Teshima, Hisanori (1409) | Won 2-1 | +171482 |
| 3sealed | 568 | Jinbo, Takashi (1481) | Lost 0-2 | -181464 |
| 4sealed | 583 | Oono, Seita (1537) | Lost 0-2 | -161448 |
| 5sealed | 913 | Honda, Yuji (1595) | Won 2-0 | +201468 |
| 6sealed | 512 | Komeda, Hiroshi (1542) | Lost 0-2 | -161452 |
| 7sealed | 610 | Sato, Yuuki (1423) | Lost 0-2 | -191433 |
| top | average opponent: 1494record: 3-4 | new rating: 1433 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2335 | Satou, Wataru4098 (1500) | Lost 1-2 | -171447 |
| 2sealed | 2331 | Katou, Shinpei (1483) | Lost 1-2 | -171430 |
| 3sealed | 2429 | Jenkins, Erica (1466) | Won 2-1 | +181448 |
| 4sealed | 2349 | Kudo, Amiru (1441) | Won 2-1 | +181466 |
| 5sealed | 2299 | Harada, Akio (1398) | Lost 1-2 | -191447 |
| top | average opponent: 1458record: 2-3 | new rating: 1447 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 608 | Onishi, Hikaru (1500) | Lost 0-2 | -181482 |
| 2sealed | 851 | Shinzawa, Tomohiro (1557) | Lost 0-2 | -171465 |
| 3sealed | 1061 | Fujita, Toshitake (1418) | Won 2-0 | +181483 |
| 4sealed | 1052 | Umehara, Yuuya (1478) | Lost 0-2 | -191464 |
| top | average opponent: 1488record: 1-3 | new rating: 1464 | ||