Grier, Joseph
Current rating: 1581
Record: 9-5
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1523 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 352 | Nixon, Kaleb (1451) | Won 2-1 | +171540 |
| 2standard | 13 | Peebles, Terence (1622) | Won 2-1 | +191559 |
| 3standard | 170 | Black, James (1559) | Lost 1-2 | -181541 |
| 4standard | 168 | Kiser, Nathan (1524) | Won 2-1 | +181559 |
| 5standard | 109 | Wen, Ming (1584) | Won 2-0 | +181577 |
| 6standard | 121 | Sneed, Alex (1594) | Lost 1-2 | -171560 |
| 7standard | 142 | McCord, Kristopher (1933) | Won 2-1 | +241584 |
| 8standard | 195 | Derella, Nicholas (1514) | Won 2-0 | +171601 |
| 9standard | 128 | McGouirk, Michael (1500) | Lost 0-2 | -201581 |
| average opponent: 1587record: 6-3 | new rating: 1581 | |||
| Grand Prix Atlanta 2008 (ALA limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 40 | Young, Michael (1500) | Lost 0-2 | -181482 |
| 2sealed | 232 | Schneider, Travis (1482) | Won 2-1 | +181500 |
| 3sealed | 234 | Deaver, Brett (1500) | Won 2-0 | +181518 |
| 4sealed | 158 | Landriz, Erik (1692) | Won 2-0 | +211539 |
| 5sealed | 142 | Mize, Logan (1641) | Lost 0-2 | -161523 |
| average opponent: 1563record: 3-2 | new rating: 1523 | |||