Rentaro, Koyama
Current rating: 1495
Record: 5-5
| Grand Prix Chiba 2016 (legacy) | starting rating: 1514 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 209 | Asada, Hiromasa (1468) | Lost 0-2 | -191495 |
| record: 0-1 | new rating: 1495 | |||
| Grand Prix Kobe 2015 (BFZ standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 290 | Iwasaki, Mitsumasa (1500) | Won 2-0 | +181518 |
| 2standard | 327 | Nakamura, Yuki6123 (1518) | Lost 0-2 | -181500 |
| 3standard | 966 | U, Kashin (1569) | Lost 0-2 | -171483 |
| 4standard | 1030 | Sim, Reuben (1514) | Won 2-1 | +191502 |
| 5standard | 610 | Inui, Sei (1498) | Won 2-1 | +181520 |
| 6standard | 385 | Oki, Hiroki (1457) | Lost 1-2 | -191501 |
| 7standard | 606 | Itoh, Akira (1434) | Won 2-0 | +161517 |
| 8standard | 493 | Miyamoto, Akihiro (1384) | Won 2-1 | +161533 |
| 9standard | 358 | Shigemune, Akinori (1482) | Lost 1-2 | -191514 |
| average opponent: 1484record: 5-4 | new rating: 1514 | |||