David-Marshall, Brian
Current rating: 1623
Record: 37-29
| Grand Prix New York 2016 (SOI standard) | starting rating: 1687 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 13 | Guinan, Sean (1500) | Lost 1-2 | -211666 |
| 2standard | 617 | Yambo, Cyle (1467) | Lost 0-2 | -221644 |
| 3standard | 877 | Gauthier, Nicolas (1464) | Lost 0-2 | -211623 |
| top | average opponent: 1477record: 0-3 | new rating: 1623 | ||
| Grand Prix Sacramento 2014 (THS limited) | starting rating: 1632 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 1027 | Patten, Thomas C (1500) | Won 2-0 | +161648 |
| 2sealed | 1058 | Gripkey, Hans (1518) | Lost 0-2 | -211627 |
| 3sealed | 1136 | Keats, Nicholas (1500) | Lost 0-2 | -201607 |
| 4sealed | 1219 | Robins, Cyrus (1653) | Won 2-0 | +191626 |
| 5sealed | 1150 | Vaughn, Collin (1602) | Won 2-1 | +171643 |
| 6sealed | 1148 | Frankel, Josh (1628) | Won 2-0 | +181661 |
| 7sealed | 1117 | Jesberger, Eric (1524) | Won 2-0 | +161677 |
| 8sealed | 1071 | Masters, Preston (1619) | Won 2-0 | +171694 |
| 9sealed | 1050 | Rasmussen, Ron (1553) | Won 2-0 | +151709 |
| 10draft | 8 | Roome, Benjamin (1529) | Won 2-1 | +151724 |
| 11draft | 39 | Cumbee, Nicholas (1570) | Won 2-0 | +151739 |
| 12draft | 70 | Latimer, James (1689) | Lost 0-2 | -191720 |
| 13draft | 30 | Manfield, Seth (2078) | Lost 1-2 | -121708 |
| 14draft | 77 | Chun, Charlie (1534) | Lost 0-2 | -211687 |
| top | average opponent: 1607record: 9-5 | new rating: 1687 | ||
| Grand Prix Las Vegas 2013 (MMA limited) | starting rating: 1621 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 583 | Li, David (1455) | Won 2-0 | +151636 |
| 2sealed | 624 | Belknap, Jacy (1518) | Won 2-0 | +151651 |
| 3sealed | 624 | Cuneo, Andrew (1865) | Lost 0-2 | -141637 |
| 4sealed | 617 | Harms, James (1514) | Won 2-0 | +161653 |
| 5sealed | 540 | Duerr, Eric (1654) | Lost 1-2 | -181635 |
| 6sealed | 456 | Opdyke, Connor (1501) | Won 2-0 | +161651 |
| 7sealed | 387 | Lovin, Mark (1622) | Lost 0-2 | -191632 |
| top | average opponent: 1590record: 4-3 | new rating: 1632 | ||
| Grand Prix New Jersey 2006 (TSP limited) | starting rating: 1538 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 166 | Swan, Brad (1614) | Lost 1-2 | -161522 |
| 3sealed | 173 | Kaynes, Michael K (1500) | Won 2-1 | +171539 |
| 4sealed | 199 | McGlinchey, Mike (1607) | Won 2-1 | +201559 |
| 5sealed | 184 | Dunham, Donald (1476) | Won 2-1 | +161575 |
| 6sealed | 44 | Hastings, Stephen (1539) | Won 2-0 | +181593 |
| 7sealed | 68 | Miguel, Andres (1621) | Won 2-1 | +181611 |
| 8sealed | 26 | Levin, Julian (1588) | Won 2-0 | +181629 |
| 9sealed | 16 | da Costa Cabral, Bernardo (1825) | Won 2-0 | +211650 |
| 10draft | 41 | Sandler, Josh (1631) | Won 2-0 | +181668 |
| 11draft | 56 | Imperiale, Jason (1638) | Lost 0-2 | -191649 |
| 12draft | 36 | Aten, Timothy (1775) | Lost 0-2 | -151634 |
| 13draft | 55 | Neary, Nicholas (1724) | Won 2-1 | +191653 |
| 14draft | 23 | Manning, Christopher (1819) | Lost 1-2 | -151638 |
| 15draft | 37 | Frangiosa, Richie (1662) | Lost 0-2 | -171621 |
| top | average opponent: 1644record: 9-5 | new rating: 1621 | ||
| Grand Prix New Jersey 2004 (Mirrodin block) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 154 | Fletcher, Brian (1544) | Lost 1-2 | -191577 |
| 3block | 352 | Walker, Bradley (1500) | Lost 0-2 | -191558 |
| 4block | 351 | Desai, Ankit (1482) | Lost 1-2 | -201538 |
| top | average opponent: 1509record: 0-3 | new rating: 1538 | ||
| Grand Prix Boston 2003 (LGN limited) | starting rating: 1660 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 61 | Tatar, Matthew (1612) | Lost 0-2 | -191641 |
| 4sealed | 171 | Landers, Mike (1520) | Lost 0-2 | -201621 |
| 5sealed | 178 | Thierry, Robert (1503) | Won 2-1 | +161637 |
| 6sealed | 139 | Sorel, Derek (1519) | Lost 1-2 | -201617 |
| 7sealed | 118 | Mink, Ashley (1468) | Lost 1-2 | -211596 |
| top | average opponent: 1524record: 1-4 | new rating: 1596 | ||
| Grand Prix Philadelphia 2002 (ONS rochester) | starting rating: 1596 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 111 | Williams, Justin (1500) | Won 2-0 | +161612 |
| 3sealed | 51 | Linskey, Ed (1708) | Won 2-1 | +201632 |
| 4sealed | 35 | Harvey, Eugene (1904) | Won 2-0 | +231655 |
| 5sealed | 24 | Stark, Ben S (1770) | Won 2-0 | +201675 |
| 6sealed | 1 | Maher, Bob (2015) | Lost 0-2 | -121663 |
| 7sealed | 25 | Parker, Brock (1572) | Lost 0-2 | -201643 |
| 8sealed | 58 | Gurwitz, Zev (1605) | Won 2-0 | +171660 |
| top | average opponent: 1725record: 5-2 | new rating: 1660 | ||
| Grand Prix Boston 2001 (PLS limited) | starting rating: 1544 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 97 | Guzman, Daniel (1518) | Lost 1-2 | -181526 |
| 3sealed | 115 | Price, Nathanial (1500) | Won 2-0 | +171543 |
| 4sealed | 143 | Colthurst, Thomas (1518) | Won 2-0 | +181561 |
| 5sealed | 55 | Willemstein, Paul (1484) | Lost 1-2 | -201541 |
| 6sealed | 110 | DeGraw, David (1501) | Won 2-0 | +171558 |
| 7sealed | 68 | Senhouse, Chris (1649) | Won 2-0 | +201578 |
| 8sealed | 63 | Robillard, Raymond (1558) | Won 2-1 | +181596 |
| top | average opponent: 1533record: 5-2 | new rating: 1596 | ||
| Grand Prix Washington DC 1999 (UDS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 11 | Richards, Jason (1518) | Won 0-0 | +181518 |
| 3sealed | 31 | Kaplan, Ted (1500) | Won 0-0 | +181536 |
| 4sealed | 27 | Pustilnik, Michael (1688) | Won 0-0 | +211557 |
| 5sealed | 18 | Pikula, Chris (1731) | Lost 0-0 | -151542 |
| 6sealed | 46 | Van Cleave, Trey (1664) | Lost 0-0 | -161526 |
| 7sealed | 57 | Egli, Walter (1518) | Won 0-0 | +181544 |
| top | average opponent: 1603record: 4-2 | new rating: 1544 | ||