O'Malley, Dennis
Current rating: 1491
| MagicCon Las Vegas 2023 Limited Open (WOE limited) | starting rating: 1453 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 3618 | Zhang, Bushi (1722) | Won 2-1 | +231476 |
| 2sealed | 3089 | Lay, Vincent (1562) | Won 2-0 | +201496 |
| 3sealed | 3145 | Seck, Ben (1774) | Won 2-1 | +231519 |
| 4sealed | 3075 | Hoey, Matthew (1840) | Lost 1-2 | -131506 |
| 5sealed | 3061 | Herren, Josh (1567) | Lost 0-2 | -171489 |
| 6sealed | 3320 | Telles, Michael (1497) | Won 2-1 | +181507 |
| 7sealed | 3159 | Davis, Albert (1577) | Lost 1-2 | -161491 |
| top | average opponent: 1649record: 4-3 | new rating: 1491 | ||
| Grand Prix Indianapolis 2012 (legacy) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 96 | Mochal, Ryan (1543) | Lost 1-2 | -171489 |
| 3legacy | 296 | Pogue, James (1499) | Lost 0-2 | -181471 |
| 4legacy | 468 | ROLEY, JUSTIN (1481) | Lost 1-2 | -181453 |
| top | average opponent: 1508record: 0-3 | new rating: 1453 | ||
| Grand Prix Toronto 2010 (SOM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 393 | Desrochers, Vincent (1551) | Won 2-1 | +191519 |
| 2sealed | 485 | Bacine, Noah (1542) | Won 2-1 | +181537 |
| 3sealed | 375 | Aten, Timothy (1873) | Lost 0-2 | -121525 |
| 4sealed | 468 | Lee, Dave (1518) | Lost 1-2 | -181507 |
| 5sealed | 529 | Yeon, Sunmo (1499) | Won 2-1 | +181525 |
| 6sealed | 471 | Lapierre, Matt (1480) | Lost 0-2 | -191506 |
| top | average opponent: 1577record: 3-3 | new rating: 1506 | ||