Robertson, Sean
Current rating: 1272
Record: 7-25-4
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1316 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 227 | Schmidt, John (1459) | Draw 1-1 | +21318 |
| 2sealed | 264 | DeAngelis, Jonathan (1500) | Lost 0-0 | -141304 |
| 3sealed | 474 | Zung, Stacy (1426) | Lost 0-2 | -161288 |
| 4sealed | 489 | Petrick, Edric (1415) | Lost 0-2 | -161272 |
| top | average opponent: 1450record: 0-3-1 | new rating: 1272 | ||
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1290 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 159 | DiNardo, Michael (1500) | Lost 0-2 | -141276 |
| 2sealed | 310 | Escudero, Hugo (1482) | Won 2-0 | +211297 |
| 3sealed | 362 | Solis, Jonathan (1526) | Lost 1-2 | -141283 |
| 4sealed | 440 | Caswell, Ben (1531) | Lost 1-2 | -131270 |
| 5sealed | 419 | Guzman, JP (1445) | Won 2-0 | +211291 |
| 6sealed | 347 | Lee, Brian (1685) | Won 2-0 | +251316 |
| top | average opponent: 1528record: 3-3 | new rating: 1316 | ||
| Grand Prix Phoenix 2017 (XLN limited) | starting rating: 1277 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Garcia, Kristian (1500) | Lost 0-2 | -141263 |
| 2sealed | 281 | Hunter, Tyler (1511) | Lost 1-2 | -141249 |
| 3sealed | 492 | Bentley, Ross (1462) | Won 2-0 | +221271 |
| 4sealed | 397 | Gentner, Joe (1442) | Won 2-0 | +211292 |
| 5sealed | 423 | Bitner, Shane (1491) | Lost 0-2 | -141278 |
| 6sealed | 421 | Nguyen, Eric (1403) | Won 2-0 | +201298 |
| 7sealed | 287 | Cho, Joshua (1898) | Lost 1-2 | -81290 |
| top | average opponent: 1530record: 3-4 | new rating: 1290 | ||
| Grand Prix Dallas-Fort Worth 2016 (modern) | starting rating: 1349 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 71 | Banks, Cody (1500) | Lost 0-2 | -151334 |
| 2modern | 637 | Richard, Shawn (1489) | Draw 1-1 | +31337 |
| 3modern | 815 | Gallivan, Jordan (1481) | Lost 0-1 | -161321 |
| 4modern | 910 | Davie, Tyler (1467) | Lost 1-2 | -151306 |
| 5modern | 924 | Wilmot, Jeremy (1463) | Draw 1-1 | +31309 |
| 6modern | 861 | Branham, Benjamin (1427) | Lost 0-2 | -161293 |
| 7modern | 777 | Goulet, Michael (1393) | Lost 1-2 | -161277 |
| top | average opponent: 1460record: 0-5-2 | new rating: 1277 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1374 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 429 | Riis-Due, Austin (1500) | Lost 1-2 | -151359 |
| 2sealed | 666 | Hogg, Devin (1481) | Lost 0-2 | -161343 |
| 3sealed | 732 | Schmitt, Grant (1463) | Draw 1-1 | +21345 |
| 4sealed | 714 | Tran, Hieu (1463) | Won 2-0 | +201365 |
| 5sealed | 595 | Ramsey, Danny (1480) | Lost 1-2 | -161349 |
| top | average opponent: 1478record: 1-3-1 | new rating: 1349 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1481 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 103 | Simpson, Zach (1500) | Lost 0-2 | -181463 |
| 2standard | 408 | Ramos, Joshua (1483) | Lost 0-2 | -181445 |
| 3standard | 512 | Evans, Chris N (1426) | Lost 1-2 | -181427 |
| 4standard | 522 | Lopez, Gideon (1429) | Lost 0-2 | -181409 |
| 5standard | 462 | Curtice, Shannon (1444) | Lost 0-2 | -171392 |
| 6standard | 397 | Allen, Frank (1426) | Lost 0-1 | -181374 |
| top | average opponent: 1452record: 0-6 | new rating: 1374 | ||
| Grand Prix Phoenix 2014 (BNG standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 447 | O'Reilly-Hahn, Cassady (1431) | Lost 0-2 | -191481 |
| top | record: 0-1 | new rating: 1481 | ||