Ervin, Christopher
Current rating: 1522
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 330 | Butler, Jessie (1755) | Lost 0-2 | -131482 |
| 2standard | 411 | Lowe, Darrin (1544) | Won 2-1 | +191501 |
| 3standard | 522 | Feliciano, Jeff (1500) | Lost 1-2 | -181483 |
| 4standard | 570 | Doiron, Joshua (1480) | Won 2-0 | +181501 |
| 5standard | 523 | Flynt, Robert (1505) | Lost 1-2 | -181483 |
| 6standard | 449 | Moreno, Matthew (1483) | Won 2-1 | +181501 |
| 7standard | 348 | Koshak, Jacob (1518) | Won 2-1 | +181519 |
| 8standard | 231 | Swenson, Luke (1636) | Lost 0-2 | -151504 |
| 9standard | 349 | Spychalski, Adam (1542) | Won 2-1 | +181522 |
| top | average opponent: 1551record: 5-4 | new rating: 1522 | ||
| Grand Prix Atlanta 2016 (KLD limited) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 789 | Phipps, Neil (1480) | Won 2-0 | +181499 |
| 2sealed | 781 | Seibert, Oliver (1522) | Lost 1-2 | -181481 |
| 3sealed | 1114 | Tierney, Justin (1395) | Lost 0-2 | -201461 |
| 4sealed | 1230 | Devine, Nicholas (1393) | Won 2-0 | +171478 |
| 5sealed | 1084 | Robertson, Calvin (1465) | Won 2-0 | +181496 |
| 6sealed | 933 | Darby, William (1522) | Lost 1-2 | -181478 |
| 7sealed | 1002 | McGouirk, Michael (1409) | Lost 1-2 | -191459 |
| 8sealed | 977 | Hazuka, Anthony (1444) | Won 2-0 | +181477 |
| 9sealed | 885 | Archie, Michael (1505) | Won 2-0 | +181495 |
| top | average opponent: 1460record: 5-4 | new rating: 1495 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 720 | Smith, Ashford (1653) | Won 2-1 | +211521 |
| 2modern | 765 | Walters, Cody (1541) | Lost 1-2 | -181503 |
| 3modern | 1011 | Vasquez, George (1373) | Lost 1-2 | -201483 |
| 4modern | 1024 | Lark, Ryan (1481) | Won 2-1 | +181501 |
| 5modern | 860 | Boss, Samuel (1460) | Won 2-0 | +171518 |
| 6modern | 764 | Pellegrin, Ian N (1515) | Lost 0-2 | -181500 |
| 7modern | 709 | Brown, Adam N (1519) | Lost 0-2 | -181482 |
| 8modern | 700 | Orfila, Kevin (1390) | Lost 0-2 | -191463 |
| 9modern | 671 | Eavenson, Collin Z (1461) | Won 2-1 | +181481 |
| top | average opponent: 1488record: 4-5 | new rating: 1481 | ||