Ishizuka, Akihito
Current rating: 1534
Record: 6-4-3
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2037 | Murata, Shouta (1498) | Lost 1-2 | -191515 |
| 2sealed | 2322 | Yokotsuka, Yu (1479) | Won 2-1 | +171532 |
| 3sealed | 2354 | Kato, Takanori (1419) | Won 2-0 | +161548 |
| 4sealed | 2235 | Kojima, Tatuya (1619) | Won 2-0 | +191567 |
| 5sealed | 2152 | Kijima, Takashi (1488) | Lost 1-2 | -191548 |
| 6sealed | 2202 | Satake, Yukihiro (1789) | Lost 0-2 | -141534 |
| average opponent: 1549record: 3-3 | new rating: 1534 | |||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 51 | Noguchi, Masanao (1500) | Draw 1-1 | 01500 |
| 2sealed | 263 | Takahashi, Jun (1406) | Lost 1-2 | -201480 |
| 3sealed | 442 | Ishii, Masashi (1427) | Draw 1-1 | -11479 |
| 4sealed | 471 | Kawakami, Tomoyuki (1482) | Won 2-0 | +181497 |
| 5sealed | 395 | Ohbayashi, Shotaro (1498) | Won 2-0 | +181515 |
| 6sealed | 301 | Choi, Young-Il (1537) | Won 2-1 | +191534 |
| 7sealed | 219 | Furukawa, Takuto (1523) | Draw 1-1 | 01534 |
| average opponent: 1482record: 3-1-3 | new rating: 1534 | |||