Yamashita, Koichi
Current rating: 1499
Record: 6-6
| Grand Prix Kyoto 2015 (legacy) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 289 | Iwasaki, Takumi (1500) | Lost 0-2 | -191518 |
| 2legacy | 293 | Saitou, Takuya (1481) | Won 2-0 | +171535 |
| 3legacy | 232 | Nomura, Tsuyoshi (1564) | Lost 1-2 | -171518 |
| 4legacy | 401 | Shimizu, Kouki (1481) | Lost 1-2 | -191499 |
| average opponent: 1507record: 1-3 | new rating: 1499 | |||
| Grand Prix Nagoya 2014 (BNG limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 69 | Nakao, Munenari (1639) | Won 2-0 | +211521 |
| 2sealed | 122 | Kakiuchi, Nobuyuki (1518) | Lost 1-2 | -191502 |
| 3sealed | 279 | Mizuno, Masanori (1415) | Won 2-0 | +171519 |
| 4sealed | 251 | Yajima, Yasunori (1457) | Won 2-0 | +171536 |
| 5sealed | 163 | Hasegawa, Gaku (1602) | Won 2-1 | +191555 |
| 6sealed | 47 | Yamanouchi, Yuki (1501) | Lost 1-2 | -191536 |
| 7sealed | 142 | Murata, Atsushi (1566) | Won 2-0 | +191555 |
| 8sealed | 69 | Itani, Hiroshi (1555) | Lost 1-2 | -181537 |
| average opponent: 1532record: 5-3 | new rating: 1537 | |||