Yamasaki, Tatsuya
Current rating: 1573
Record: 11-8-1
| Grand Prix Chiba 2015 (MM2 limited) | starting rating: 1527 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 2249 | Katou, Yuusuke (1500) | Won 2-1 | +181545 |
| 2sealed | 2082 | Shigehara, Toshinori (1819) | Won 2-1 | +221567 |
| 3sealed | 2097 | Sakamoto, ryosuke42 (1518) | Won 2-1 | +181585 |
| 4sealed | 2062 | Mori, Katsuhiro (2055) | Lost 1-2 | -101575 |
| 5sealed | 2111 | Mizumura, Ukon (1541) | Lost 1-2 | -191556 |
| 6sealed | 2147 | Nomiya, Yohei (1519) | Won 2-0 | +171573 |
| top | average opponent: 1659record: 4-2 | new rating: 1573 | ||
| Grand Prix Shizuoka 2015 (KTK limited) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 161 | Kanehara, Masataka (1500) | Won 2-1 | +181507 |
| 2sealed | 206 | Ochiai, Yusuke (1518) | Lost 0-2 | -181489 |
| 3sealed | 364 | Morikawa, Takayuki (1498) | Won 2-0 | +181507 |
| 4sealed | 299 | Sato, Gaku (1520) | Won 2-0 | +191526 |
| 5sealed | 189 | Furugen, Takeji (1433) | Won 2-0 | +161542 |
| 6sealed | 96 | Yanada, Kenji (1550) | Draw 1-1 | 01542 |
| 7sealed | 88 | Lim, Shaun (1706) | Lost 0-2 | -151527 |
| top | average opponent: 1532record: 4-2-1 | new rating: 1527 | ||
| Grand Prix Yokohama 2013 (GTC limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 786 | Nakajima, Hiroki 596 (1500) | Won 2-0 | +181500 |
| 2sealed | 789 | Atsuji, Makoto (1517) | Won 2-1 | +191519 |
| 3sealed | 790 | Kasuga, Nobuhiro (1501) | Lost 0-2 | -191500 |
| 4sealed | 955 | Ootsuka, Koutarou (1870) | Lost 0-2 | -111489 |
| top | average opponent: 1597record: 2-2 | new rating: 1489 | ||
| Grand Prix Sendai 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 5 | Zhao, Rubin (1500) | Lost 1-2 | -181482 |
| 2standard | 319 | Oota, Satoshi (1482) | Lost 1-2 | -181464 |
| 3standard | 314 | Saishu, Hiroaki (1467) | Won 2-1 | +181482 |
| top | average opponent: 1483record: 1-2 | new rating: 1482 | ||