Kokumai, Hirokazu
Current rating: 1565
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 653 | Takahashi, Tetsuhiro (1566) | Lost 0-2 | -181519 |
| 4standard | 449 | Chin, Wei Han (1730) | Won 2-1 | +221541 |
| 5standard | 526 | Okuno, Ryohei (1520) | Won 2-1 | +181559 |
| 6standard | 283 | Fujii, Akira (1592) | Lost 1-2 | -181541 |
| 7standard | 555 | Kong, Chong Teng (1540) | Lost 0-2 | -181523 |
| 8standard | 792 | Kato, Hiroki (1588) | Won 2-0 | +191542 |
| 9standard | 505 | Wataya, Yosuke (1514) | Won 2-0 | +181560 |
| 10standard | 448 | Murase, Hiroshi (1847) | Lost 0-2 | -131547 |
| 11standard | 352 | Shinohara, Kazuaki (1591) | Won 2-1 | +191566 |
| 12standard | 271 | Umman, Masahiro (1526) | Won 2-0 | +171583 |
| 13standard | 186 | Park, Hyun Woong (1506) | Lost 1-2 | -191564 |
| 14standard | 235 | Hayashi, Takatomo (1509) | Won 2-1 | +171581 |
| 15standard | 205 | Hosoi, Ippei (1683) | Lost 0-2 | -161565 |
| top | average opponent: 1593record: 7-6 | new rating: 1565 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1470 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 119 | Daichi, Matsuki (1500) | Won 2-0 | +191489 |
| 2sealed | 214 | Nishikawa, Shigeki (1395) | Won 2-0 | +161505 |
| 3sealed | 80 | Naganawa, Yuuki (1679) | Won 2-1 | +211526 |
| 4sealed | 35 | Miyawaki, Takeshi (1666) | Lost 0-2 | -151511 |
| 5sealed | 127 | Akada, Yasunori (1626) | Lost 1-2 | -161495 |
| 6sealed | 173 | Kosuga, Shuhei (1463) | Won 2-0 | +171512 |
| 7sealed | 97 | Semura, Junichi (1573) | Won 2-1 | +191531 |
| 8sealed | 100 | Sato, Motohiko (1542) | Lost 1-2 | -171514 |
| 9sealed | 110 | Ishii, Taisuke (1800) | Won 2-1 | +231537 |
| top | average opponent: 1583record: 6-3 | new rating: 1537 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 695 | Kozakai, Yukio (1600) | Lost 0-2 | -161484 |
| 5sealed | 831 | Sun, Bo (1585) | Lost 0-2 | -161468 |
| 6sealed | 932 | Akimoto, Koshi (1513) | Won 2-1 | +181486 |
| 7sealed | 819 | Honda, Yuji (1589) | Lost 1-2 | -161470 |
| top | average opponent: 1571record: 1-3 | new rating: 1470 | ||