Warren, Joshua D
Current rating: 1509
Record: 7-7
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 33 | Krulewitz, Emily (1483) | Won 2-0 | +181508 |
| 2legacy | 11 | Jack, Steven (1518) | Lost 0-2 | -181490 |
| 3legacy | 578 | Carter, Jay (1473) | Won 2-0 | +171507 |
| 4legacy | 329 | Hilty, Jacob (1574) | Lost 0-2 | -161491 |
| 5legacy | 551 | Rodgers, Ronald (1444) | Won 2-0 | +171508 |
| 6legacy | 327 | Ocampo, Christopher (1528) | Lost 0-2 | -181490 |
| 7legacy | 438 | Currie, Matthew (1554) | Won 2-0 | +191509 |
| 8legacy | 359 | Ladyman, Korey (1463) | Lost 1-2 | -181491 |
| 9legacy | 323 | Mesnard, Thomas (1499) | Won 2-1 | +181509 |
| average opponent: 1504record: 5-4 | new rating: 1509 | |||
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 181 | Chappell, Jonathon (1500) | Won 2-0 | +181518 |
| 2modern | 235 | Russell, David M (1454) | Won 0-0 | +171535 |
| 3modern | 30 | Vargo, Joe (1531) | Lost 0-2 | -181517 |
| 4modern | 270 | Sullivan, Patrick (1864) | Lost 1-2 | -121505 |
| 5modern | 476 | Wauer, Carl (1664) | Lost 0-2 | -151490 |
| average opponent: 1603record: 2-3 | new rating: 1490 | |||