Polson, Joseph
Current rating: 1469
Record: 3-5
| Grand Prix Seattle 2018 (legacy) (legacy) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 107 | Anderson, Isaac (1481) | Won 2-0 | +181517 |
| 2legacy | 300 | Schneck, Jason (1591) | Lost 1-2 | -171500 |
| 3legacy | 584 | Van Dyke, Michael (1679) | Lost 1-2 | -141486 |
| 4legacy | 698 | Schlegel, Thomas (1558) | Lost 1-2 | -171469 |
| average opponent: 1577record: 1-3 | new rating: 1469 | |||
| Grand Prix Las Vegas 2015 (2) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 186 | Hsu, Yohsiang (1537) | Won 2-1 | +191519 |
| 2sealed | 97 | Chin, Gavin (1518) | Won 2-1 | +181537 |
| 3sealed | 60 | Greeson, Kevin (1468) | Lost 1-2 | -201517 |
| 4sealed | 333 | Kruger, Joshua (1518) | Lost 0-2 | -181499 |
| average opponent: 1510record: 2-2 | new rating: 1499 | |||