Sakuma, Akira
Current rating: 1521
| Grand Prix Tokyo 2016 (SOI standard) | starting rating: 1503 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 569 | Tano, Yuki (1460) | Won 2-0 | +171520 |
| 2standard | 748 | Kitajima, Hiroyasu (1480) | Won 2-0 | +171537 |
| 3standard | 585 | Watanabe, Yuta (1549) | Won 2-0 | +181555 |
| 4standard | 205 | Nomura, Tsuyoshi (1588) | Lost 0-2 | -171538 |
| 5standard | 663 | Hirose, Makoto (1555) | Lost 0-2 | -181520 |
| 6standard | 645 | Miyagawa, Kazuma (1520) | Won 2-0 | +181538 |
| 7standard | 661 | Yusuke, Ueki (1537) | Won 2-1 | +181556 |
| 8standard | 340 | Yamamoto, Tetsuji (1546) | Lost 0-2 | -181538 |
| 9standard | 393 | Ooneda, Yoshihiro (1601) | Lost 1-2 | -171521 |
| top | average opponent: 1537record: 5-4 | new rating: 1521 | ||
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 292 | Itou, Masayoshi (1520) | Lost 0-2 | -181523 |
| 2sealed | 453 | Aizawa, Seiji (1396) | Lost 0-2 | -201503 |
| top | average opponent: 1458record: 0-2 | new rating: 1503 | ||
| Grand Prix Shizuoka 2013 (THS standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 517 | Emori, Shinichi (1451) | Lost 0-2 | -191481 |
| 2standard | 724 | Akai, Satoshi (1569) | Lost 0-2 | -161465 |
| 3standard | 906 | Satou, Kenichi (1410) | Won 2-0 | +171482 |
| 4standard | 833 | Hamada, Kouji (1445) | Won 2-1 | +171499 |
| 5standard | 780 | Tsukamoto, Tatsushi (1443) | Won 2-0 | +171516 |
| 6standard | 758 | Itou, Junnosuke (1523) | Won 2-0 | +181534 |
| 7standard | 619 | Murase, Hiroshi (1793) | Won 2-1 | +231557 |
| 8standard | 551 | Kihara, Atsuki (1694) | Lost 0-2 | -161541 |
| top | average opponent: 1541record: 5-3 | new rating: 1541 | ||