Barkon, Joshua L
Current rating: 1488
Record: 5-6
| Grand Prix Columbus 2007 (legacy) | starting rating: 1526 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 111 | Leemaster, Ben R (1500) | Lost 0-2 | -181508 |
| 2legacy | 343 | Glackin, Todd E (1482) | Lost 1-2 | -191489 |
| 3legacy | 398 | Mitchell, Thomas (1447) | Won 2-0 | +181507 |
| 4legacy | 381 | Becvar, Nick (1481) | Lost 1-2 | -191488 |
| average opponent: 1477record: 1-3 | new rating: 1488 | |||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 243 | Sondike, Daniel (1500) | Lost 0-2 | -181482 |
| 2sealed | 329 | Kaplan, Ben (1481) | Won 2-1 | +181500 |
| 3sealed | 338 | Cottrell, Scott (1501) | Won 2-1 | +181518 |
| 4sealed | 208 | Hilton, Aleksander (1519) | Won 2-0 | +181536 |
| 5sealed | 78 | Harvey, Eugene (1816) | Lost 0-2 | -131523 |
| 6sealed | 206 | Bracht, Maximilian (1697) | Won 2-1 | +211544 |
| 7sealed | 85 | Alesi-Mullen, John (1555) | Lost 1-2 | -181526 |
| average opponent: 1581record: 4-3 | new rating: 1526 | |||