Irvin, Joseph
Current rating: 1466
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 427 | Vachon, David (1454) | Won 2-0 | +181448 |
| 2sealed | 33 | Li, Phillip (1705) | Lost 1-2 | -131435 |
| 3sealed | 411 | Munson, Victor (1499) | Won 2-0 | +191454 |
| 4sealed | 344 | Holden, Michael (1799) | Lost 0-2 | -121442 |
| 5sealed | 450 | Tino, Jonathan (1465) | Won 2-1 | +191461 |
| 6sealed | 283 | Newton, William (1519) | Won 2-1 | +191480 |
| 7sealed | 295 | Orrmons, Kale (1481) | Lost 0-2 | -181462 |
| 8sealed | 310 | Robinson, Damond (1473) | Won 2-0 | +181480 |
| 9sealed | 235 | Nelson, Dan (1703) | Lost 0-2 | -141466 |
| top | average opponent: 1566record: 5-4 | new rating: 1466 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1483 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 833 | Mathis, Justin (1558) | Lost 0-2 | -171466 |
| 2modern | 987 | Hendrickson, Jared D (1482) | Lost 1-2 | -171449 |
| 3modern | 1109 | Pagani, Taylor (1414) | Lost 1-2 | -191430 |
| top | average opponent: 1485record: 0-3 | new rating: 1430 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 32 | League, Charles (1463) | Lost 0-2 | -191481 |
| 3standard | 362 | Magby, Mike (1568) | Won 2-1 | +201501 |
| 4standard | 387 | Mason, Benjamin (1469) | Lost 0-2 | -191482 |
| 5standard | 498 | McCullough, Jeffrey (1500) | Won 2-0 | +191501 |
| 6standard | 295 | Acosta, Christian (1519) | Lost 0-2 | -181483 |
| top | average opponent: 1504record: 2-3 | new rating: 1483 | ||