Katayama, Hiroki
Current rating: 1611
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1542 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 96 | Miyoshi, Yasufumi (1410) | Draw 1-1 | -31539 |
| 2sealed | 260 | Mino, Tetsuya (1508) | Won 2-1 | +181557 |
| 3sealed | 238 | Sato, Yuichi (1466) | Won 2-1 | +161573 |
| 4sealed | 121 | Koyama, Kaoru (1572) | Won 2-1 | +181591 |
| 5sealed | 64 | Satou, Takamasa (1482) | Won 2-1 | +161607 |
| 6sealed | 28 | Lim, Shaun (1726) | Won 2-1 | +201627 |
| 7sealed | 17 | Harane, Kenta (1582) | Won 2-0 | +171644 |
| 8sealed | 7 | Hitomi, Masaaki (1707) | Lost 0-2 | -161628 |
| 9sealed | 29 | Suematsu, Takaaki (1695) | Lost 1-2 | -171611 |
| top | average opponent: 1572record: 6-2-1 | new rating: 1611 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1431 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 745 | Sato, Hiroyuki (1500) | Won 2-1 | +191450 |
| 2standard | 702 | Muneta, Yasutoshi (1473) | Lost 1-2 | -171433 |
| 3standard | 704 | Kuribayashi, Ryuta (1499) | Won 2-0 | +191452 |
| 4standard | 660 | Yamakawa, Hiroaki (1472) | Won 2-1 | +181470 |
| 5standard | 589 | Shoji, Tatsuro (1555) | Won 2-0 | +201490 |
| 6standard | 578 | Asano, Wataru (1561) | Won 2-1 | +191509 |
| 7standard | 542 | Miyamoto, Hiroya (1657) | Lost 0-2 | -151494 |
| 8standard | 622 | Murakami, Kazuya3837 (1642) | Won 2-1 | +211515 |
| 9standard | 674 | Suzuki, Yusuke (1545) | Won 2-1 | +181533 |
| 10standard | 40 | Yoon, SooHan (1792) | Lost 1-2 | -131520 |
| 11standard | 101 | Hozumi, Masashi (1578) | Won 2-0 | +191539 |
| 12standard | 44 | Shimono, Tetsuro (1637) | Lost 0-2 | -161523 |
| 13standard | 96 | Minoshima, Takenori (1459) | Lost 0-2 | -201503 |
| 14standard | 92 | Andou, Wataru (1574) | Won 2-1 | +201523 |
| 15standard | 88 | Mishima, Keita (1576) | Won 2-0 | +191542 |
| top | average opponent: 1568record: 10-5 | new rating: 1542 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 293 | M., Kouji (1500) | Lost 1-2 | -181482 |
| 2sealed | 312 | Kobayashi, Jyun (1511) | Lost 1-2 | -171465 |
| 3sealed | 427 | Yuasa, Kentarou (1613) | Lost 0-2 | -161449 |
| 4sealed | 473 | Satou, Natsuki (1446) | Lost 0-2 | -181431 |
| top | average opponent: 1518record: 0-4 | new rating: 1431 | ||