Yoshioka, Katsutoshi
Current rating: 1546
Record: 5-3
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 183 | Nishimura, Hajime (1480) | Won 2-1 | +181518 |
| 2sealed | 101 | Tanzawa, Masanori (1518) | Won 2-0 | +181536 |
| 3sealed | 124 | Shin, Jong-Ho (1613) | Won 2-1 | +191555 |
| 4sealed | 25 | Orihara, Jun (1624) | Won 2-1 | +191574 |
| 5sealed | 54 | Miyawaki, Takeshi (1682) | Won 2-0 | +201594 |
| 6sealed | 22 | Shiraishi, Masaharu (1697) | Lost 1-2 | -161578 |
| 7sealed | 75 | Imai, Satoshi (1711) | Lost 0-2 | -151563 |
| 8sealed | 146 | Shimizu, Yousuke (1648) | Lost 1-2 | -171546 |
| average opponent: 1622record: 5-3 | new rating: 1546 | |||