Blough, Sean
Current rating: 1516
Record: 10-10
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1498 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 142 | Small, Brandon (1427) | Won 2-1 | +171515 |
| 2sealed | 249 | Japinga, Christopher (1493) | Lost 0-0 | -181497 |
| 3sealed | 328 | Vulatic, Seth (1438) | Won 2-1 | +171514 |
| 4sealed | 288 | Chen, Miley (1492) | Won 2-0 | +171531 |
| 5sealed | 149 | Jacobino, Joshua (1547) | Won 2-0 | +181549 |
| 6sealed | 84 | Bohn, Jonathan (1805) | Won 2-1 | +231572 |
| 7sealed | 26 | Chan, Jason (1922) | Lost 0-2 | -121560 |
| 8sealed | 90 | Fairchild, Eric (1590) | Won 2-1 | +191579 |
| 9sealed | 35 | Polyakov, Alexander (1842) | Lost 0-2 | -141565 |
| 10draft | 106 | Petkov, Kaloyan (1524) | Lost 1-2 | -181547 |
| 12draft | 47 | Grossman, Isaac (1561) | Lost 0-2 | -181529 |
| 13draft | 76 | Hampton, Andrew (1824) | Won 2-0 | +231552 |
| 14draft | 23 | Johnson, James (1559) | Lost 1-2 | -181534 |
| 15draft | 87 | Dunn, Conor (1528) | Lost 0-2 | -181516 |
| average opponent: 1611record: 7-7 | new rating: 1516 | |||
| Grand Prix Hartford 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 147 | Mesa, Juan (1506) | Won 2-0 | +181518 |
| 2modern | 232 | Pelletier, Lenny (1517) | Won 2-1 | +181536 |
| 3modern | 325 | Van Vliet III, Leonard (1341) | Won 2-1 | +151551 |
| 4modern | 3 | Holt, Andrew (1632) | Lost 0-2 | -171534 |
| 5modern | 141 | Patton, Brandon (1531) | Lost 0-2 | -181516 |
| 6modern | 480 | Wu, Kevin (1532) | Lost 0-2 | -181498 |
| average opponent: 1510record: 3-3 | new rating: 1498 | |||