Roberts, Brock
Current rating: 1705 (#6158)
Record: 25-15-1
| Grand Prix Houston 2018 (RIX limited) | starting rating: 1702 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 153 | Rickman, Edward (1459) | Won 2-0 | +141716 |
| 2sealed | 95 | Roque Quezada, Francisco (1484) | Won 2-1 | +141730 |
| 3sealed | 5 | Johnson, Mark S (1536) | Won 2-0 | +141744 |
| 4sealed | 67 | Shepard, Derek (1564) | Lost 0-2 | -211723 |
| 5sealed | 72 | Ramirez, Daniel (1753) | Lost 0-2 | -181705 |
| top | average opponent: 1559record: 3-2 | new rating: 1705 | ||
| Grand Prix Houston 2016 (OGW standard) | starting rating: 1509 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 44 | Santiago, John (1500) | Lost 1-2 | -181491 |
| 2standard | 490 | Hadeler, Sean (1482) | Won 2-1 | +181509 |
| 3standard | 666 | Godfrey, James (1497) | Won 2-0 | +181527 |
| 4standard | 440 | Person, Samuel (1519) | Won 2-1 | +181545 |
| 5standard | 240 | Chandler, David (1550) | Won 2-0 | +181563 |
| 6standard | 211 | Brito Da Silva, Joao Paulo (1551) | Won 2-1 | +181581 |
| 7standard | 34 | Peralez, Jake (1747) | Won 2-1 | +211602 |
| 8standard | 69 | Minard, Darin (1876) | Won 2-0 | +231625 |
| 9standard | 39 | DeMars, Brian (2002) | Won 2-0 | +241649 |
| 10standard | 23 | Rodriquez, Carlos (1632) | Lost 0-2 | -181631 |
| 11standard | 44 | Smith, Brett (1614) | Won 2-1 | +171648 |
| 12standard | 15 | Braun-Duin, Brian (2050) | Won 2-1 | +251673 |
| 13standard | 14 | Rubin, Benjamin (2048) | Won 2-0 | +251698 |
| 14standard | 11 | Ward, Daniel (1926) | Lost 0-2 | -141684 |
| 15standard | 24 | MacGillivray, Joseph (1692) | Won 2-0 | +181702 |
| top | average opponent: 1712record: 12-3 | new rating: 1702 | ||
| Grand Prix San Antonio 2014 (KTK standard) | starting rating: 1528 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 141 | Long, Steven (1536) | Won 2-0 | +181546 |
| 3standard | 28 | White, Cory (1534) | Lost 0-2 | -181528 |
| 4standard | 133 | Soto, Carlos (1518) | Lost 0-2 | -191509 |
| top | average opponent: 1530record: 1-2 | new rating: 1509 | ||
| Grand Prix Dallas-Fort Worth 2013 (THS standard) | starting rating: 1515 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 349 | Hiett, Johnathan (1411) | Draw 1-1 | -21513 |
| 2standard | 299 | Hall, Jordan (1500) | Won 2-0 | +181531 |
| 3standard | 255 | Martin, Benjamin A (1469) | Won 2-0 | +171548 |
| 4standard | 197 | Ramirez, Sanjuan (1535) | Won 2-0 | +171565 |
| 5standard | 149 | Elrod, Matthew Ty (1553) | Won 2-1 | +181583 |
| 6standard | 125 | Wallace, Ben (1490) | Lost 1-2 | -191564 |
| 7standard | 165 | Karmarkar, Vivek (1539) | Lost 1-2 | -191545 |
| 8standard | 222 | White, Matthew 2 (1577) | Lost 1-2 | -171528 |
| top | average opponent: 1509record: 4-3-1 | new rating: 1528 | ||
| Grand Prix Houston 2013 (DGM limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 10 | Gill, Colin (1516) | Won 2-0 | +181518 |
| 5sealed | 12 | Salter, Michael (1503) | Won 2-0 | +181536 |
| 6sealed | 18 | Carolan, Chris (1588) | Lost 0-2 | -171519 |
| 7sealed | 34 | Wadkins, Nate J (1569) | Lost 1-2 | -171502 |
| 8sealed | 123 | Thrasher, Sean (1510) | Won 2-1 | +181520 |
| 9sealed | 72 | Inoue, Sean (1808) | Won 2-0 | +231543 |
| 10draft | 49 | Rome, Corey (1515) | Won 2-1 | +181561 |
| 11draft | 58 | Ogreenc, Greg (1806) | Lost 0-2 | -141547 |
| 12draft | 49 | Hofmann, Mike (1791) | Lost 0-2 | -141533 |
| 13draft | 12 | Oude Luttikhuis, Maarten (1510) | Lost 1-2 | -181515 |
| top | average opponent: 1612record: 5-5 | new rating: 1515 | ||