McMahon, Douglas
Current rating: 1509
Record: 7-7-2
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1460 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 137 | Rogers, Brian (1661) | Won 2-0 | +221482 |
| 2standard | 140 | Broderick, Benjamin (1552) | Won 2-1 | +191501 |
| 3standard | 4 | Scibetta, Vinny (1457) | Won 2-1 | +181519 |
| 4standard | 126 | Hill, Tyler (1838) | Draw 1-1 | +51524 |
| 5standard | 65 | Gupta, Vinay (1572) | Won 1-0 | +191543 |
| 6standard | 32 | Roberson, Rameal (1563) | Lost 0-2 | -181525 |
| 7standard | 93 | Roper, Derrick (1629) | Lost 0-2 | -161509 |
| 8standard | 155 | Zhou, Martin (1564) | ID | 01509 |
| average opponent: 1605record: 4-2-2 | new rating: 1509 | |||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 280 | Hetrick, Nicholas (1480) | Won 2-0 | +181518 |
| 2standard | 212 | Setree, Cody (1493) | Lost 1-2 | -191499 |
| 3standard | 456 | Pack, Scott (1474) | Lost 0-2 | -181481 |
| 4standard | 522 | Butler, John (1411) | Lost 0-2 | -201461 |
| 5standard | 608 | McLaughlin, Justin (1329) | Won 2-1 | +161477 |
| 6standard | 439 | Lanza, Giovanni (1533) | Won 2-0 | +191496 |
| 7standard | 447 | Markisch, John (1512) | Lost 0-2 | -181478 |
| 8standard | 420 | Pratt, Phil (1477) | Lost 0-2 | -181460 |
| 9standard | 408 | Francis, Alberto (1468) | Draw 1-1 | 01460 |
| average opponent: 1464record: 3-5-1 | new rating: 1460 | |||