Morrison, Sean
Current rating: 1502
Record: 13-13
| Grand Prix Atlanta 2019 (legacy) | starting rating: 1522 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 94 | Wise, Nicholas (1613) | Lost 1-2 | -161506 |
| 3legacy | 387 | Prusa, Adam (1492) | Lost 0-2 | -181488 |
| 4legacy | 397 | Freeman, Luke (1475) | Won 2-1 | +171505 |
| 5legacy | 269 | Sherman, Anthony (1352) | Lost 1-2 | -201485 |
| 6legacy | 361 | Turner, Jonathan (1471) | Won 2-1 | +171502 |
| 7legacy | 257 | Babadi, Joseph (1485) | Lost 1-2 | -181484 |
| 8legacy | 245 | White, Lillian (1466) | Won 2-0 | +181502 |
| top | average opponent: 1479record: 3-4 | new rating: 1502 | ||
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1512 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 57 | Stieger, Richard (1499) | Won 2-0 | +181530 |
| 3modern | 209 | Weiser, Daniel (1965) | Lost 0-2 | -101520 |
| 4modern | 483 | Rosenberg, Zeke (1496) | Won 2-0 | +171537 |
| 5modern | 122 | Parshall, Rodney (1594) | Won 2-0 | +191556 |
| 6modern | 92 | Burkett, Joseph (1532) | Lost 0-2 | -181538 |
| 7modern | 233 | Colegrove, Bobby (1662) | Lost 0-2 | -161522 |
| top | average opponent: 1625record: 3-3 | new rating: 1522 | ||
| Grand Prix Memphis 2019 (RNA standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 284 | Schaller, Philippe (1613) | Lost 0-2 | -161519 |
| 2standard | 294 | Stephens, John (1429) | Won 2-0 | +161535 |
| 3standard | 392 | Stensrud, Ethan (1488) | Lost 0-2 | -191516 |
| 4standard | 435 | Brentzel, Chelsea (1488) | Won 2-1 | +181534 |
| 5standard | 255 | VanBuskirk, Jason (1364) | Lost 1-2 | -221512 |
| top | average opponent: 1476record: 2-3 | new rating: 1512 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 290 | Klindt, Devin (1395) | Won 2-1 | +161516 |
| 2modern | 236 | Rittiner, Joe (1689) | Won 2-0 | +211537 |
| 3modern | 18 | Karsten, James (1434) | Won 2-0 | +161553 |
| 4modern | 32 | Maloney, Kyle (1543) | Won 2-0 | +181571 |
| 5modern | 95 | Poole, Tj (1438) | Lost 0-2 | -201551 |
| 6modern | 120 | Gottfried, Jacob (1572) | Lost 1-2 | -181533 |
| 7modern | 184 | Walsh, Daniel (1685) | Lost 0-2 | -151518 |
| 8modern | 284 | Stock, Josh (1477) | Won 2-0 | +171535 |
| top | average opponent: 1529record: 5-3 | new rating: 1535 | ||