Efthimiadis, Nathan
Current rating: 1514
Record: 7-6
| Grand Prix Charlotte 2016 (modern) | starting rating: 1554 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 490 | Boyd, Devin (1534) | Lost 0-2 | -191535 |
| 2modern | 630 | D'Andrea, Lucas (1482) | Lost 1-2 | -191516 |
| 3modern | 1152 | Devine, Nicholas (1438) | Won 2-0 | +171533 |
| 4modern | 838 | Hurst, Thane (1505) | Lost 0-2 | -191514 |
| average opponent: 1490record: 1-3 | new rating: 1514 | |||
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 393 | Meade, Chauncey (1417) | Lost 0-2 | -201480 |
| 2sealed | 497 | Laidlaw, Joshua (1482) | Won 2-0 | +191499 |
| 3sealed | 308 | Telesca, Andrew (1502) | Won 2-1 | +181517 |
| 4sealed | 189 | Handy, Amber (1518) | Lost 1-2 | -181499 |
| 5sealed | 361 | Allen, John (1515) | Won 2-0 | +181517 |
| 6sealed | 319 | Clapper, James L (1518) | Won 2-0 | +181535 |
| 7sealed | 162 | Halter, Eddie (1539) | Won 2-0 | +181553 |
| 8sealed | 126 | White, Brian J (1554) | Won 2-1 | +181571 |
| 9sealed | 113 | Klump, Erik (1599) | Lost 1-2 | -171554 |
| average opponent: 1516record: 6-3 | new rating: 1554 | |||