Roach, Josh
Current rating: 1520
Record: 18-19
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1467 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Beck, Kassandra (1500) | Lost 0-2 | -181449 |
| 2sealed | 486 | Reinschreiber, Zachary (1446) | Won 2-1 | +181467 |
| 3sealed | 394 | Friedman, Edan (1464) | Won 2-0 | +181485 |
| 4sealed | 238 | Berry, William (1473) | Won 2-1 | +181503 |
| 5sealed | 91 | Shimshock, Erik (1538) | Won 2-0 | +191522 |
| 6sealed | 119 | Lanham, Joshua (1616) | Won 2-0 | +191541 |
| 7sealed | 61 | Grorud, Dustin (1539) | Won 2-0 | +181559 |
| 8sealed | 29 | Wey, Matt (1628) | Lost 1-2 | -161543 |
| 9sealed | 85 | Dougher, Sean (1575) | Won 2-1 | +181561 |
| 10draft | 153 | Lynn, Nicholas (1865) | Lost 0-2 | -121549 |
| 11draft | 45 | Roy, Anjon (1667) | Lost 1-2 | -161533 |
| 12draft | 176 | Kubo, Jason (1550) | Won 2-0 | +181551 |
| 13draft | 90 | Robins, Jules (1755) | Lost 0-2 | -141537 |
| 14draft | 82 | Shen, Eric (1627) | Lost 1-2 | -171520 |
| top | average opponent: 1589record: 8-6 | new rating: 1520 | ||
| Grand Prix Calgary 2013 (M14 standard) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 182 | Coles, Travis (1486) | Won 0-0 | +191482 |
| 2standard | 55 | Rotariu, Colin (1482) | Won 2-1 | +181500 |
| 3standard | 17 | Estep, Drew (1622) | Lost 1-2 | -161484 |
| 4standard | 169 | Holmes, Aaron (1482) | Won 2-0 | +181502 |
| 5standard | 55 | Cragg, Matthew (1535) | Lost 1-2 | -171485 |
| 6standard | 149 | La Forest, Adam (1493) | Lost 1-2 | -181467 |
| top | average opponent: 1517record: 3-3 | new rating: 1467 | ||
| Grand Prix Vancouver 2012 (AVR limited) | starting rating: 1496 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 185 | Miner, Nick (1500) | Won 2-1 | +181514 |
| 2sealed | 102 | Wong, Brian_LR (1770) | Lost 0-2 | -131501 |
| 3sealed | 250 | Joachim, Aryk (1500) | Lost 0-2 | -181483 |
| 4sealed | 318 | Griffith, Jonathan (1483) | Won 2-0 | +181501 |
| 5sealed | 277 | Bent, Josh (1500) | Lost 0-2 | -181483 |
| 6sealed | 272 | Luke, David (1418) | Lost 0-2 | -201463 |
| top | average opponent: 1528record: 2-4 | new rating: 1463 | ||
| Grand Prix Portland 2010 (M11 limited) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 440 | Lidral-Porter, Dan (1500) | Lost 1-2 | -181477 |
| 2sealed | 372 | Kanen, Zachary (1482) | Lost 1-2 | -181459 |
| 3sealed | 507 | Sanders, Dan (1464) | Won 2-0 | +181477 |
| 4sealed | 425 | Lynch, Brendan (1484) | Won 2-1 | +191496 |
| 5sealed | 309 | Knodel, Brandon (1500) | Won 2-0 | +181514 |
| 6sealed | 271 | Maybee, Brad J (1525) | Lost 1-2 | -181496 |
| top | average opponent: 1492record: 3-3 | new rating: 1496 | ||
| Grand Prix Vancouver 2008 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 12 | Woodley, Ian (1634) | Lost 0-2 | -161484 |
| 5extended | 59 | Thompson, Mike (1865) | Won 2-0 | +251509 |
| 6extended | 32 | Peloquin, Gregory (1536) | Lost 0-2 | -171492 |
| 7extended | 43 | Thiessen, Jacob (1544) | Won 2-0 | +191511 |
| 8extended | 55 | Potter, Doug (1661) | Lost 1-2 | -161495 |
| top | average opponent: 1648record: 2-3 | new rating: 1495 | ||