O'Rourke, Jason
Current rating: 1427
Record: 28-36-1
Grand Prix Minneapolis 2001Grand Prix Milwaukee 2002Grand Prix Cleveland 2002Grand Prix Los Angeles 2002Grand Prix Detroit 2003Grand Prix Kansas City 2003Grand Prix Orlando 2004Grand Prix Salt Lake City 2005Grand Prix St. Louis 2006Grand Prix Phoenix 2006Grand Prix Dallas 2007Grand Prix Kansas City 2011
| Grand Prix Kansas City 2011 (NPH limited) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 142 | Hahn, William (1487) | Lost 1-2 | -181443 |
| 3sealed | 223 | Sconci, Jacob (1484) | Lost 1-2 | -171426 |
| 4sealed | 314 | Wright, Thomas (1367) | Won 2-0 | +171443 |
| 5sealed | 301 | Bodger, Steve (1538) | Lost 0-2 | -161427 |
| top | average opponent: 1469record: 1-3 | new rating: 1427 | ||
| Grand Prix Dallas 2007 (extended) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 22 | Tyler, Steven (1500) | Lost 1-2 | -171455 |
| 3extended | 215 | Hawkins, John (1500) | Lost 0-0 | -181437 |
| 4extended | 298 | Spero, Travis T (1482) | Won 2-0 | +191456 |
| 5extended | 212 | Manzer, Chris (1499) | Won 2-0 | +191475 |
| 6extended | 187 | Ochoa, David (1686) | Lost 0-2 | -141461 |
| top | average opponent: 1533record: 2-3 | new rating: 1461 | ||
| Grand Prix Phoenix 2006 (CSP limited) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 5 | Nakamura, Gary (1568) | Won 2-0 | +191501 |
| 3sealed | 14 | Davis, Chris H (1521) | Won 2-0 | +191520 |
| 4sealed | 5 | Inoue, Sean (1537) | Lost 0-2 | -181502 |
| 5sealed | 78 | Hakanson, Ben (1435) | Lost 1-2 | -191483 |
| 6sealed | 72 | Coimbra, Andre (1910) | Lost 0-2 | -111472 |
| top | average opponent: 1594record: 2-3 | new rating: 1472 | ||
| Grand Prix St. Louis 2006 (CSP limited) | starting rating: 1457 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 83 | Scott, Eric (1518) | Won 2-1 | +191476 |
| 3sealed | 57 | Ketita, Nassim (1539) | Won 2-1 | +191495 |
| 4sealed | 23 | Phillips, Cedric (1665) | Lost 0-2 | -151480 |
| 5sealed | 93 | Harber, Gabriel (1498) | Won 2-1 | +191499 |
| 6sealed | 41 | Freitas, John (1505) | Lost 0-2 | -181481 |
| 7sealed | 71 | Pekios, Andrew C (1536) | Won 2-1 | +191500 |
| 8sealed | 56 | Hansen, Matt (1500) | Lost 0-2 | -181482 |
| top | average opponent: 1537record: 4-3 | new rating: 1482 | ||
| Grand Prix Salt Lake City 2005 (Kamigawa block) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 3 | Drahos, Matt (1500) | Won 2-0 | +191466 |
| 2block | 35 | Walden, Andrew [USA] (1500) | Won 2-0 | +191485 |
| 3block | 4 | Bales, Jake (1552) | Lost 0-2 | -171468 |
| 4block | 51 | Pearce, Chris [USA] (1515) | Lost 1-2 | -171451 |
| 5block | 80 | Barnum, Tyler (1502) | Won 2-0 | +191470 |
| 6block | 71 | Thompson, Gerry (1748) | Lost 1-2 | -131457 |
| top | average opponent: 1553record: 3-3 | new rating: 1457 | ||
| Grand Prix Orlando 2004 (Mirrodin block) | starting rating: 1455 | |||
| round | table | opponent (rating) | result | Δrating |
| 4block | 26 | Contreras, Robert (1554) | Lost 0-2 | -171438 |
| 5block | 41 | Polirer, Eric (1522) | Won 2-1 | +201458 |
| 6block | 53 | Morawski, Jonathan (1689) | Won 2-1 | +221480 |
| 7block | 37 | Herdman, James (1571) | Lost 0-2 | -161464 |
| 8block | 52 | Hansen, Tim (1555) | Lost 1-2 | -171447 |
| top | average opponent: 1578record: 2-3 | new rating: 1447 | ||
| Grand Prix Kansas City 2003 (MRD limited) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 120 | McAlexander, Ernest (1486) | Draw 1-1 | 01472 |
| 2sealed | 123 | Byleen-Higley, Karl (1500) | Lost 0-2 | -171455 |
| 3sealed | 179 | Cleveland, Ian (1499) | Won 2-1 | +181473 |
| 4sealed | 159 | Diesel, John (1427) | Lost 0-2 | -181455 |
| top | average opponent: 1478record: 1-2-1 | new rating: 1455 | ||
| Grand Prix Detroit 2003 (Onslaught block) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 101 | Johnson, Robert (1518) | Won 2-0 | +191464 |
| 3block | 78 | Gruneich, Timothy (1429) | Lost 0-2 | -181446 |
| 4block | 104 | Chadha, Carlos (1493) | Won 2-1 | +181464 |
| 5block | 91 | Doran, Shaun (1713) | Lost 1-2 | -131451 |
| 6block | 111 | Sottosanti, Paul (1616) | Won 2-0 | +211472 |
| top | average opponent: 1554record: 3-2 | new rating: 1472 | ||
| Grand Prix Los Angeles 2002 (ONS rochester) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 62 | Case, Andrew (1500) | Won 2-0 | +181492 |
| 2sealed | 87 | Chu, Trevor (1539) | Won 2-0 | +191511 |
| 3sealed | 28 | Berkowitz, Jordan (1547) | Lost 1-2 | -171494 |
| 4sealed | 88 | Chong, Rick (1752) | Lost 0-2 | -141480 |
| 5sealed | 146 | Dula, Ori (1500) | Lost 1-2 | -171463 |
| 6sealed | 131 | Psyhos, Jeff (1481) | Lost 0-2 | -181445 |
| top | average opponent: 1553record: 2-4 | new rating: 1445 | ||
| Grand Prix Cleveland 2002 (Odyssey block) | starting rating: 1469 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 30 | Aiyappasamy, Saravana (1500) | Won 2-1 | +181487 |
| 2block | 71 | Schempp, Matthew (1518) | Lost 0-2 | -171470 |
| 3block | 206 | Topham, Erik (1535) | Lost 1-2 | -171453 |
| 4block | 228 | Lashchuk, David (1480) | Lost 1-2 | -171436 |
| 5block | 215 | Phillips, Derek (1463) | Won 2-0 | +181454 |
| 6block | 174 | Six, Brian (1482) | Won 2-0 | +191473 |
| 7block | 126 | Bruce, David (1500) | Won 2-0 | +181491 |
| 8block | 90 | Kelly, Brendan (1516) | Lost 0-2 | -171474 |
| top | average opponent: 1499record: 4-4 | new rating: 1474 | ||
| Grand Prix Milwaukee 2002 (TOR standard) | starting rating: 1464 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 122 | Berrios, Stephen (1500) | Lost 0-2 | -171447 |
| 2standard | 228 | Roman, Andrew (1482) | Won 2-0 | +181465 |
| 3standard | 244 | Burton, Carl (1482) | Won 2-0 | +191484 |
| 4standard | 99 | Fram, Bryan (1518) | Won 2-0 | +181502 |
| 5standard | 112 | Nishioka, Andrew (1585) | Lost 0-2 | -161486 |
| 6standard | 109 | Bisciglia, Carl (1485) | Won 2-0 | +181504 |
| 7standard | 116 | Lammers, Brandon (1537) | Lost 1-2 | -181486 |
| 8standard | 105 | Higgins, Charles (1516) | Lost 1-2 | -171469 |
| top | average opponent: 1513record: 4-4 | new rating: 1469 | ||
| Grand Prix Minneapolis 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 41 | Hoover, Tim (1500) | Lost 0-2 | -181482 |
| 2block | 147 | Rude, Daniel (1482) | Lost 0-2 | -181464 |
| top | average opponent: 1491record: 0-2 | new rating: 1464 | ||