Sung, Jee-sun
Current rating: 1481
Record: 2-3
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 908 | Toyama, Satoshi (1447) | Lost 0-2 | -191481 |
| 2sealed | 1126 | Matsuoka, Sho (1481) | Won 2-1 | +181499 |
| 3sealed | 1018 | Isobe, Jyunichi (1519) | Lost 0-2 | -181481 |
| 4sealed | 1008 | Yoda, Yuuji (1445) | Lost 1-2 | -181463 |
| 5sealed | 1060 | Tanaka, Mami (1464) | Won 2-0 | +181481 |
| average opponent: 1471record: 2-3 | new rating: 1481 | |||