Arita, Hiroyuki
Current rating: 1576
Record: 10-6
| Grand Prix Kobe 2014 (modern) | starting rating: 1559 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 349 | Nishikawa, Yukihiro (1449) | Lost 1-2 | -201539 |
| 2modern | 312 | Kawahara, Daichi (1482) | Won 2-1 | +171556 |
| 3modern | 354 | Narita, Chisato (1533) | Won 2-1 | +181574 |
| 4modern | 250 | Okamoto, Ryosuke (1504) | Won 2-1 | +161590 |
| 5modern | 85 | Sorribas, Xavier (1654) | Lost 1-2 | -161574 |
| 6modern | 322 | Kawano, Yuuki (1452) | Won 2-1 | +151589 |
| 7modern | 184 | Kuroda, Masashiro (1866) | Lost 1-2 | -131576 |
| average opponent: 1563record: 4-3 | new rating: 1576 | |||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 855 | Iriki, Ryou (1521) | Won 2-1 | +181518 |
| 2sealed | 673 | Ogawa, Ryou (1486) | Won 2-0 | +181536 |
| 3sealed | 813 | Takebayashi, Tomo (1843) | Won 2-1 | +231559 |
| 4sealed | 667 | Yamaoka, Nobuyuki (1539) | Lost 0-2 | -181541 |
| 5sealed | 761 | Nagai, Katsuaki (1491) | Won 2-0 | +171558 |
| 6sealed | 781 | Furusato, Hiroshi (1588) | Won 1-0 | +181576 |
| 7sealed | 708 | Iwasaki, Yuusuke (1749) | Lost 1-2 | -141562 |
| 8sealed | 928 | Ohtsuka, Youhei (1561) | Won 2-1 | +181580 |
| 9sealed | 922 | Nam, Kyung Hwan (1445) | Lost 0-2 | -211559 |
| average opponent: 1580record: 6-3 | new rating: 1559 | |||