Halverson, Erik
Current rating: 1500
Record: 6-6-1
| Grand Prix Baltimore 2014 (KTK limited) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 203 | Brown, Paul (1459) | Won 2-0 | +171536 |
| 2sealed | 254 | Coghlan, Ken (1464) | Lost 0-2 | -191517 |
| 3sealed | 342 | Poplin, Ryan (1463) | Won 2-1 | +171534 |
| 4sealed | 285 | Cruz, Eric (1489) | Lost 0-2 | -191515 |
| 5sealed | 319 | May, John (1692) | Lost 0-2 | -151500 |
| average opponent: 1514record: 2-3 | new rating: 1500 | |||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 203 | Wang, Jacky (1500) | Lost 0-2 | -181482 |
| 2extended | 325 | Lin, Wei (1482) | Won 2-0 | +181500 |
| 3extended | 290 | Cheseldine, Robert (1461) | Draw 1-1 | -11499 |
| 4extended | 317 | Bennett, Ross (1501) | Won 2-1 | +181517 |
| 5extended | 215 | Pustilnik, Michael (1687) | Lost 1-2 | -151502 |
| 6extended | 289 | Stoltzfus, Nathan J (1500) | Won 2-1 | +181520 |
| 7extended | 209 | Heinemann, Adam (1469) | Won 2-0 | +171537 |
| 8extended | 148 | Tolson, Phillip E (1524) | Lost 0-2 | -181519 |
| average opponent: 1515record: 4-3-1 | new rating: 1519 | |||