Yoshioka, Naoki
Current rating: 1556
Record: 8-6
| Grand Prix Chiba 2019 (M20 limited) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 352 | Matoba, Takashi (1639) | Won 2-1 | +201551 |
| 2sealed | 315 | Kato, Wataru (1426) | Won 2-1 | +151566 |
| 3sealed | 316 | Yajima, Hiromichi (1521) | Won 2-1 | +181584 |
| 4sealed | 100 | Deng, Jun (1615) | Won 2-1 | +181602 |
| 5sealed | 105 | Yu, Yin (1822) | Lost 1-2 | -141588 |
| 6sealed | 152 | Zimmermann, Raoul (1806) | Lost 0-2 | -141574 |
| 7sealed | 248 | Urabe, Ryosuke (1556) | Lost 1-2 | -181556 |
| average opponent: 1626record: 4-3 | new rating: 1556 | |||
| Grand Prix Yokohama 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 557 | Kusanagi, Yui (1500) | Won 2-0 | +181518 |
| 2modern | 183 | Toyama, Keiichi (1554) | Lost 1-2 | -171501 |
| 3modern | 698 | Kawahara, Ryouta (1745) | Lost 0-2 | -141487 |
| 4modern | 976 | Tomiyama, Katsuhiko (1502) | Won 2-1 | +181505 |
| 5modern | 704 | Takadera, Toshihisa (1523) | Won 2-0 | +191524 |
| 6modern | 453 | Takakura, Shota (1758) | Won 2-1 | +221546 |
| 7modern | 503 | Yokoyama, Shohei (1707) | Lost 1-2 | -151531 |
| average opponent: 1613record: 4-3 | new rating: 1531 | |||