Hammaker, Joseph
Current rating: 1504
Record: 8-8-1
| Grand Prix Indianapolis 2016 (modern) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 159 | Lageman, Sean (1418) | Lost 0-2 | -191463 |
| 2modern | 762 | Fitzgerald, Zachary (1579) | Won 2-0 | +201483 |
| 3modern | 534 | Hassett, Devon (1461) | Won 2-0 | +181501 |
| 4modern | 442 | Stine, Chris (1554) | Lost 0-2 | -171484 |
| 5modern | 574 | Nelson, Jeremiah (1596) | Lost 0-2 | -161468 |
| 6modern | 655 | Pawlisz, Thomas (1406) | Won 2-0 | +171485 |
| 7modern | 511 | Gray, Jeremy (1431) | Won 2-1 | +171502 |
| 8modern | 331 | Hardwick, Linsey (1427) | Won 2-1 | +161518 |
| 9modern | 221 | Brown, Derek (1529) | Won 2-1 | +191537 |
| 10modern | 1118 | Cummings, Adam (1563) | Lost 0-2 | -181519 |
| 11modern | 1044 | Nguyen, Michael (1513) | Won 2-1 | +181537 |
| 12modern | 989 | Hicks, Jackson (1699) | Lost 1-2 | -151522 |
| 13modern | 1019 | Richardson, John (1534) | Lost 0-2 | -181504 |
| average opponent: 1516record: 7-6 | new rating: 1504 | |||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 6 | McElroy, Parker (1500) | Won 2-0 | +181518 |
| 2modern | 70 | Crowley, Dave (1490) | Lost 1-2 | -191499 |
| 3modern | 410 | Wade, Jeremy (1501) | Draw 1-1 | +11500 |
| 4modern | 465 | Evans, Sean (1547) | Lost 0-2 | -181482 |
| average opponent: 1510record: 1-2-1 | new rating: 1482 | |||