Kozuka, Takashi
Current rating: 1398
Record: 13-18-2
| Grand Prix Nagoya 2016 (OGW limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 34 | Murooka, Kensuke (1500) | Won 2-0 | +181479 |
| 2sealed | 79 | Ujihara, Atsushi (1500) | Lost 0-2 | -171462 |
| 3sealed | 1033 | Yamanouchi, Yuki (1513) | Lost 1-2 | -171445 |
| 4sealed | 894 | Ehata, Masaaki (1481) | Lost 1-2 | -181427 |
| 5sealed | 1028 | Ushio, Atsushi (1755) | Lost 0-2 | -121415 |
| 6sealed | 1065 | Shimura, Takeshi (1445) | Lost 0-2 | -171398 |
| top | average opponent: 1532record: 1-5 | new rating: 1398 | ||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 49 | Yoshida, Atsushi (1494) | Won 2-0 | +171555 |
| 2standard | 511 | Kawashima, Teruki (1517) | Lost 0-2 | -181537 |
| 3standard | 781 | Takano, Yuuki (1682) | Lost 0-2 | -161521 |
| 4standard | 1017 | Kihara, Yasuyuki (1365) | Lost 1-2 | -211500 |
| 5standard | 1061 | Yamato, Kohei (1464) | Won 2-0 | +181518 |
| 6standard | 897 | Fukuya, Kenji (1431) | Lost 0-2 | -201498 |
| 7standard | 748 | Fujii, Ami (1340) | Lost 1-2 | -211477 |
| 8standard | 681 | Iwamoto, Reo (1553) | Lost 0-2 | -161461 |
| top | average opponent: 1481record: 2-6 | new rating: 1461 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1584 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1042 | Utunomiya, Hironori (1500) | Lost 0-2 | -191565 |
| 2sealed | 1413 | Kato, Go (1481) | Lost 0-2 | -201545 |
| 3sealed | 1339 | Kinoshita, Shouta (1462) | Won 2-1 | +171562 |
| 4sealed | 1180 | Saito, Takahiro (1483) | Lost 1-2 | -201542 |
| 5sealed | 1204 | Hama, Shunsuke (1347) | Won 2-1 | +151557 |
| 6sealed | 1143 | Ichii, Hiroaki (1521) | Lost 0-2 | -191538 |
| top | average opponent: 1466record: 2-4 | new rating: 1538 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1570 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 228 | Matsushige, Masataka (1533) | Won 2-1 | +181588 |
| 2sealed | 26 | Nakajima, Masanori (1519) | Lost 1-2 | -201568 |
| 3sealed | 276 | Tukamoto, Takuya (1591) | Won 2-0 | +191587 |
| 4sealed | 136 | Takano, Hirokazu (1554) | Won 2-0 | +171604 |
| 5sealed | 141 | Hasegawa, Tatuya (1508) | Lost 0-2 | -201584 |
| top | average opponent: 1541record: 3-2 | new rating: 1584 | ||
| Grand Prix Kobe 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 293 | Iwamoto, Yasuharu (1500) | Won 2-0 | +181518 |
| 2modern | 93 | Terai, Tadayuki (1517) | Won 2-1 | +181536 |
| 3modern | 61 | Nishimura, Takurou (1535) | Won 2-0 | +181554 |
| 4modern | 85 | Honda, Rintaro (1553) | Draw 1-1 | 01554 |
| 5modern | 75 | Osawa, Sho (1517) | Draw 1-1 | -11553 |
| 6modern | 184 | Mori, Nobuaki (1531) | Won 2-0 | +181571 |
| 7modern | 129 | Ueno, Takafumi (1553) | Won 2-1 | +181589 |
| 8modern | 93 | Kabashima, Takuya (1568) | Lost 0-2 | -191570 |
| top | average opponent: 1534record: 5-1-2 | new rating: 1570 | ||