Hamasaki, Geoffrey
Current rating: 1535
| Grand Prix Reno 2020 (THB limited) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 80 | Sorge, Connor (1500) | Won 2-0 | +171543 |
| 2sealed | 145 | Nossett, Miles (1502) | Lost 0-2 | -191524 |
| 3sealed | 259 | Palansky, Robert (1505) | Won 2-1 | +181542 |
| 4sealed | 161 | Milechman, Daniel (1828) | Won 2-0 | +231565 |
| 5sealed | 126 | Myers, William (1682) | Won 2-0 | +201585 |
| 6sealed | 51 | Garcia, Christopher 6272 (1901) | Lost 0-2 | -121573 |
| 7sealed | 129 | Johnston, John (1523) | Lost 0-2 | -191554 |
| 8sealed | 105 | Bradley, Patrick (1506) | Lost 1-2 | -191535 |
| top | average opponent: 1618record: 4-4 | new rating: 1535 | ||
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1208 | Neganiwina, David (1419) | Won 2-1 | +171498 |
| 2sealed | 144 | Wilczek, Robert (1594) | Lost 0-2 | -161482 |
| 3sealed | 474 | FUENTES ALVAREZ, MARCO ANTONIO (1500) | Won 2-1 | +181500 |
| 4sealed | 200 | Pho, Teresa (1681) | Lost 0-2 | -141486 |
| 5sealed | 1202 | Arnold, Jason (1473) | Won 2-1 | +171503 |
| 6sealed | 291 | Ernenwein, David (1516) | Won 2-1 | +191522 |
| 7sealed | 180 | Quinn, Gary (1804) | Lost 0-2 | -131509 |
| 8sealed | 206 | Wang, Kevin (1458) | Won 2-1 | +171526 |
| top | average opponent: 1556record: 5-3 | new rating: 1526 | ||
| Grand Prix Seattle-Tacoma 2012 (DKA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 334 | Shaw, David (1518) | Won 2-0 | +181518 |
| 2sealed | 163 | chapman, ashton l (1500) | Lost 0-2 | -181500 |
| 3sealed | 226 | Dodge, Philip (1482) | Won 2-0 | +181518 |
| 4sealed | 304 | Mason, Jesse S (1507) | Lost 1-2 | -191499 |
| 5sealed | 283 | Petuya, Anthony (1491) | Lost 0-2 | -181481 |
| top | average opponent: 1500record: 2-3 | new rating: 1481 | ||