Posloski, Timothy
Current rating: 1518
| Grand Prix Montreal 2007 (Time Spiral block) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 231 | Archambault, Julien (1500) | Won 2-0 | +171555 |
| 2block | 85 | Morse-Fortier, Philip (1605) | Lost 1-2 | -171538 |
| 3block | 210 | Sheldon, Rodney (1499) | Won 2-0 | +181556 |
| 4block | 118 | Hodgson, Craig (1508) | Lost 1-2 | -191537 |
| 5block | 200 | Toon, Brian (1500) | Lost 0-2 | -191518 |
| top | average opponent: 1522record: 2-3 | new rating: 1518 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 52 | Kelly, Michael J (1500) | Won 2-0 | +181500 |
| 2block | 108 | Hopkins, Michael (1517) | Won 2-1 | +191519 |
| 3block | 156 | Holland, Kitt (1574) | Won 2-1 | +191538 |
| 4block | 112 | Braiterman, Cory (1538) | Won 2-1 | +181556 |
| 5block | 39 | Morris, Robert (1572) | Won 2-1 | +181574 |
| 6block | 23 | Hughes, Ryan (1596) | Lost 1-2 | -181556 |
| 7block | 36 | Correia, Kevin (1538) | Lost 0-2 | -181538 |
| 8block | 90 | Samuels, Eddie (1519) | Lost 0-2 | -181520 |
| 9block | 100 | Faramia Cohen, Davide (1548) | Won 2-0 | +181538 |
| top | average opponent: 1545record: 6-3 | new rating: 1538 | ||
| Grand Prix Philadelphia 2000 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 130 | Herkner, Chris (1500) | Won 0-0 | +181518 |
| 2extended | 103 | Kocher, Steve (1518) | Lost 0-0 | -181500 |
| 3extended | 200 | O'dea, Connor (1500) | Won 0-0 | +181518 |
| 4extended | 117 | Gurwitz, Zev (1518) | Lost 0-0 | -181500 |
| 5extended | 173 | Perry, Eric (1500) | Lost 0-0 | -181482 |
| top | average opponent: 1507record: 2-3 | new rating: 1482 | ||