Powell, Logan
Current rating: 1520
Record: 6-5
| Grand Prix Charlotte 2013 (GTC limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 669 | Woodell, Alex S (1556) | Won 2-1 | +191536 |
| 2sealed | 684 | Paxton, Jessica (1518) | Won 2-1 | +171553 |
| 3sealed | 790 | Miller, Kyle (1719) | Lost 0-2 | -151538 |
| 4sealed | 1040 | Freiden, Wesley (1517) | Lost 1-2 | -181520 |
| average opponent: 1578record: 2-2 | new rating: 1520 | |||
| Grand Prix Washington DC 2010 (ROE standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 949 | DeMarino, Matt (1445) | Won 2-0 | +171517 |
| 2standard | 730 | Perreault, Normand (1518) | Won 2-1 | +181535 |
| 3standard | 739 | Jones, Danny (1536) | Lost 0-2 | -181517 |
| 4standard | 864 | Hall, Mark T (1519) | Lost 1-2 | -181499 |
| 5standard | 845 | Saunders, Kevin (1499) | Won 2-0 | +181517 |
| 6standard | 752 | Harrison, Jonathan (1504) | Won 2-0 | +181535 |
| 7standard | 738 | Collins, Darren (1539) | Lost 0-2 | -181517 |
| average opponent: 1509record: 4-3 | new rating: 1517 | |||