Roberts, Joel
Current rating: 1483
Record: 14-16
| Grand Prix Niagara Falls 2019 (legacy) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 216 | Inman, Jesse (1689) | Lost 1-2 | -161515 |
| 3legacy | 369 | Cong, Yale (1666) | Lost 0-2 | -151500 |
| 4legacy | 409 | Johnson, Jeff (1547) | Lost 0-2 | -171483 |
| top | average opponent: 1634record: 0-3 | new rating: 1483 | ||
| Grand Prix Memphis 2019 (RNA standard) | starting rating: 1497 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 117 | Richardet, Nathan (1500) | Won 2-1 | +181515 |
| 2standard | 202 | Daniels, Sabastian (1568) | Lost 0-2 | -171498 |
| 3standard | 231 | Williams, Josh (1501) | Won 2-0 | +181516 |
| 4standard | 294 | Jolly, Jordon (1517) | Won 2-1 | +181534 |
| 5standard | 173 | Keithline, Brendan (1567) | Lost 0-2 | -171517 |
| 6standard | 280 | Davis, Wyatt (1570) | Won 2-1 | +191536 |
| 7standard | 118 | Shackelford, Tony (1539) | Won 2-0 | +181554 |
| 8standard | 66 | MacKay, Connor (1551) | Won 2-1 | +181572 |
| 9standard | 171 | Higashi, Chris (1878) | Won 2-1 | +231595 |
| 10standard | 134 | Darby, Wyatt (1934) | Lost 1-2 | -121583 |
| 11standard | 151 | Gray, Eric (1601) | Lost 1-2 | -171566 |
| 12standard | 151 | Hryshchenko, Viktoriia (1647) | Lost 1-2 | -171549 |
| 13standard | 171 | Sloan, Stephen (1576) | Lost 0-2 | -171532 |
| 14standard | 175 | Weinman, Walker (1514) | Won 2-0 | +171549 |
| 15standard | 169 | Hill, Leon (1507) | Lost 0-2 | -181531 |
| top | average opponent: 1598record: 8-7 | new rating: 1531 | ||
| Grand Prix New Jersey 2019 (RNA limited) | starting rating: 1537 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 301 | Olsen, David (1500) | Lost 0-2 | -191518 |
| 2sealed | 331 | Smith, Bryan (1445) | Lost 0-2 | -191499 |
| 3sealed | 615 | Harder, Brendan (1466) | Won 2-1 | +171516 |
| 4sealed | 601 | Sonntag, Zachary (1484) | Lost 0-2 | -191497 |
| top | average opponent: 1474record: 1-3 | new rating: 1497 | ||
| Grand Prix Richmond 2018 (std) (M19 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 41 | McCullum, Devin (1446) | Won 2-0 | +171517 |
| 2standard | 90 | Hunter, Ethan (1520) | Won 2-0 | +181535 |
| 3standard | 28 | Smith, Alexander (1631) | Lost 0-2 | -161519 |
| 4standard | 161 | Mays, Cal (1551) | Won 2-1 | +181537 |
| 5standard | 67 | Shepard, Jesse (1495) | Won 2-1 | +181555 |
| 6standard | 67 | Vinson, Gary (1503) | Won 2-1 | +171572 |
| 7standard | 17 | Lash, Michael (1590) | Lost 1-2 | -181554 |
| 8standard | 124 | Rhoades, Jessee (1584) | Lost 1-2 | -171537 |
| top | average opponent: 1540record: 5-3 | new rating: 1537 | ||