Brockman, David Derek Scott
Current rating: 1456
Record: 25-33-1
Grand Prix Las Vegas 2017 (limited)Grand Prix Minneapolis 2017Grand Prix Las Vegas 2018 (limited)Grand Prix Sacramento 2018Grand Prix Los Angeles 2018Grand Prix New Jersey 2018Grand Prix Kansas City 2019Grand Prix Seattle 2019Grand Prix Las Vegas 2019 (limited)Grand Prix Portland 2019Grand Prix New Jersey 2020
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1448 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 175 | Burch, Hal (1599) | Won 2-1 | +201468 |
| 4sealed | 150 | Sanderson, James (1661) | Lost 1-2 | -141454 |
| 5sealed | 234 | Pham, Max (1490) | Won 2-1 | +191473 |
| 6sealed | 109 | Schwartz, Gregory (1547) | Lost 0-2 | -171456 |
| top | average opponent: 1574record: 2-2 | new rating: 1456 | ||
| Grand Prix Portland 2019 (ELD standard) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 113 | Vaugeois, Christophe (1675) | Draw 0-0 | +51439 |
| 4standard | 67 | Bernier, Kristopher (1538) | Lost 0-2 | -171422 |
| 5standard | 118 | Kashyap, Anu (1519) | Won 2-0 | +201442 |
| 6standard | 79 | Estrada, Russell (1455) | Won 2-0 | +181460 |
| 7standard | 44 | [anonymous] | Lost 0-2 | -121448 |
| top | average opponent: 1588record: 2-2-1 | new rating: 1448 | ||
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 243 | Wagstaff, Evan (1998) | Won 2-1 | +281458 |
| 4sealed | 132 | Sellers, Josh (1752) | Lost 1-2 | -131445 |
| 5sealed | 236 | McGucken, Patrick (1499) | Won 2-1 | +191464 |
| 6sealed | 1183 | Brunton, David (1636) | Lost 0-2 | -151449 |
| 7sealed | 259 | Martin, Scot (1640) | Lost 1-2 | -151434 |
| top | average opponent: 1705record: 2-3 | new rating: 1434 | ||
| Grand Prix Seattle 2019 (MH1 limited) | starting rating: 1486 | |||
| round | table | opponent (rating) | result | Δrating |
| A3sealed | 131 | Salazar, J.D. (1479) | Lost 0-2 | -181468 |
| A4sealed | 209 | Rose, Michael 0332 (1517) | Lost 0-2 | -171451 |
| A5sealed | 255 | Jones, Mike (1322) | Lost 1-2 | -211430 |
| top | average opponent: 1440record: 0-3 | new rating: 1430 | ||
| Grand Prix Kansas City 2019 (WAR standard) | starting rating: 1490 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 121 | Donnan, Blake (1613) | Lost 1-2 | -161474 |
| 4standard | 241 | Clark, Shawn (1575) | Won 0-0 | +201494 |
| 5standard | 158 | Ward, Sean (1416) | Won 2-1 | +171511 |
| 6standard | 70 | Horspool, Tyler (1800) | Lost 1-2 | -131498 |
| 7standard | 104 | Herberholz, Mark (1843) | Lost 0-2 | -121486 |
| top | average opponent: 1649record: 2-3 | new rating: 1486 | ||
| Grand Prix New Jersey 2018 (GRN standard) | starting rating: 1478 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 75 | Hartzell, Patrick (1698) | Won 2-0 | +221500 |
| 2standard | 43 | Rhoades, Jessee (1619) | Won 2-0 | +201520 |
| 3standard | 213 | Kvartek, Chris (1897) | Lost 1-2 | -111509 |
| 4standard | 344 | Elbert, Troy (1501) | Lost 0-2 | -181491 |
| 5standard | 347 | Fortini, Joseph (1397) | Lost 1-2 | -201471 |
| 6standard | 405 | Song, Jungin (1518) | Won 2-0 | +191490 |
| 7standard | 322 | Dai, Huaxin (1482) | Lost 0-2 | -181472 |
| 8standard | 296 | Aristy, Rainer (1475) | Won 2-0 | +181490 |
| top | average opponent: 1573record: 4-4 | new rating: 1490 | ||
| Grand Prix Los Angeles 2018 (M19 standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 246 | Quiroz, Gabriel (1278) | Lost 0-2 | -221478 |
| top | record: 0-1 | new rating: 1478 | ||
| Grand Prix Sacramento 2018 (M19 limited) | starting rating: 1447 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 7 | Erickson, Samuel (1508) | Lost 1-2 | -171430 |
| 2sealed | 399 | Hoser, Eric (1582) | Won 2-0 | +211451 |
| 3sealed | 497 | Chang, Andrew (1502) | Won 2-0 | +191470 |
| 4sealed | 220 | Peek, Thomas (1576) | Won 2-0 | +201490 |
| 5sealed | 256 | Kondo, Kyle (1542) | Lost 0-2 | -171473 |
| 6sealed | 316 | Chrobak, Mike (1629) | Won 2-1 | +211494 |
| 7sealed | 236 | Parot, Ignacio (1847) | Lost 0-2 | -121482 |
| 8sealed | 223 | Siedschlag, Cassandra (1516) | Won 2-0 | +181500 |
| top | average opponent: 1588record: 5-3 | new rating: 1500 | ||
| Grand Prix Las Vegas 2018 (limited) (DOM limited) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 200 | Smith, Jonathan (1461) | Won 2-0 | +181448 |
| 2sealed | 293 | Bittner, Kenneth (1502) | Won 2-1 | +191467 |
| 3sealed | 34 | Lopez, Zack (1472) | Lost 0-2 | -181449 |
| 4sealed | 479 | Sloan, Shawn (1660) | Won 2-0 | +221471 |
| 5sealed | 209 | Dunn, Zach (1738) | Lost 0-2 | -131458 |
| 6sealed | 374 | Snyder, Daniel (1594) | Won 2-1 | +201478 |
| 7sealed | 303 | Maples, Zechariah (1692) | Lost 1-2 | -141464 |
| 8sealed | 326 | Alspach, Matthew (1519) | Lost 1-2 | -171447 |
| top | average opponent: 1580record: 4-4 | new rating: 1447 | ||
| Grand Prix Minneapolis 2017 (HOU standard) | starting rating: 1461 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 353 | Ulmer, Chris (1500) | Lost 0-2 | -171444 |
| 2standard | 366 | Hand, Christopher (1467) | Won 2-0 | +181462 |
| 3standard | 378 | Uphoff, Thomas (1604) | Lost 1-2 | -151447 |
| 4standard | 404 | Volkers, Eric (1480) | Lost 0-2 | -181429 |
| 5standard | 492 | Kozlowski, Matthew (1463) | Won 2-0 | +191448 |
| 6standard | 377 | Kenjar, Jason (1439) | Lost 0-2 | -181430 |
| top | average opponent: 1492record: 2-4 | new rating: 1430 | ||
| Grand Prix Las Vegas 2017 (limited) (AKH limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 139 | Tran, Saron (1504) | Lost 0-2 | -181482 |
| 2sealed | 708 | Lai, Jimmy (1394) | Won 2-1 | +161498 |
| 3sealed | 950 | Warren, Tyler (1494) | Lost 1-2 | -181480 |
| 4sealed | 801 | Carlton, Robert (1582) | Lost 1-2 | -161464 |
| 5sealed | 951 | Xie, Ronald (1458) | Won 2-0 | +181482 |
| 6sealed | 755 | Nelson, John (1296) | Lost 1-2 | -211461 |
| top | average opponent: 1455record: 2-4 | new rating: 1461 | ||