Roberts, Sean
Current rating: 1503
Record: 4-4
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Young, Mason (1560) | Lost 0-2 | -171483 |
| 2sealed | 439 | Bennett, Evan (1449) | Lost 1-2 | -191464 |
| 3sealed | 541 | Askam, Angelena (1464) | Lost 1-2 | -181446 |
| 4sealed | 561 | Heflin, Dan (1451) | Won 2-0 | +191465 |
| 5sealed | 467 | Concha, Alfonso (1693) | Won 2-0 | +221487 |
| 6sealed | 414 | Peng, Brian (1434) | Won 2-0 | +171504 |
| 7sealed | 313 | Hittner, John (1470) | Won 2-0 | +171521 |
| 8sealed | 200 | Tweedly, Jarrid (1519) | Lost 0-2 | -181503 |
| average opponent: 1505record: 4-4 | new rating: 1503 | |||