Marx, Brian
Current rating: 1496
Record: 23-27-3
| Grand Prix Richmond 2018 (leg) (legacy) | starting rating: 1430 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 40 | LaPlante, Ryan (1629) | Draw 1-1 | +31433 |
| 2legacy | 168 | Cohoon, Marshall (1454) | Won 2-0 | +191452 |
| 3legacy | 210 | Britton, Steven (1483) | Won 2-1 | +181470 |
| 4legacy | 168 | Nijhawan, Rishi (1536) | Won 2-0 | +201490 |
| 5legacy | 62 | Chestnut, Logan (1671) | Lost 1-2 | -151475 |
| 6legacy | 131 | Kwok, Cosmo (1623) | Won 2-1 | +211496 |
| 7legacy | 81 | Williams, Randall (1492) | Lost 1-2 | -191477 |
| 8legacy | 142 | Jones, Samuel (1508) | Won 2-0 | +191496 |
| top | average opponent: 1550record: 5-2-1 | new rating: 1496 | ||
| Grand Prix Columbus 2016 (legacy) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 67 | Matthews, Scott (1500) | Won 2-0 | +191458 |
| 3legacy | 287 | Zwadlo, Josh (1474) | Won 2-1 | +181476 |
| 4legacy | 20 | Reilly, Troy (1653) | Draw 1-1 | +31479 |
| 5legacy | 109 | Menzies, Emil (1542) | Lost 1-2 | -171462 |
| 6legacy | 257 | Maginley, Corey (1581) | Lost 1-2 | -151447 |
| 7legacy | 395 | Razuri, Carlo (1516) | Lost 1-2 | -171430 |
| top | average opponent: 1544record: 2-3-1 | new rating: 1430 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1445 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 266 | Riedel, Brian (1500) | Lost 0-2 | -171428 |
| 2modern | 947 | Donivan, Tyler (1482) | Won 2-0 | +191447 |
| 3modern | 895 | Skomo, Shawn (1500) | Won 1-0 | +191466 |
| 4modern | 573 | Page, Veronica (1579) | Lost 0-2 | -161450 |
| 5modern | 678 | Mason, Sky (1856) | Lost 1-2 | -111439 |
| top | average opponent: 1583record: 2-3 | new rating: 1439 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 961 | Moses, Jordan E (1500) | Lost 1-2 | -181499 |
| 2modern | 982 | Steady, Joseph H (1482) | Lost 0-2 | -181481 |
| 3modern | 1115 | Norman, Shelly (1463) | Lost 0-2 | -191462 |
| 4modern | 1142 | Dudkowski, Michael (1477) | Lost 1-2 | -171445 |
| top | average opponent: 1480record: 0-4 | new rating: 1445 | ||
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1529 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 196 | Pannell, Thomas (1649) | Won 2-1 | +201549 |
| 3sealed | 1 | Duerr, Eric (1752) | Lost 1-2 | -141535 |
| 4sealed | 255 | Cullerton, Evan (1564) | Won 2-0 | +181553 |
| 5sealed | 115 | Taylor, Joshua (1562) | Lost 1-2 | -171536 |
| 6sealed | 375 | McNaught, Wallace (1525) | Lost 0-2 | -191517 |
| top | average opponent: 1611record: 2-3 | new rating: 1517 | ||
| Grand Prix Baltimore 2014 (KTK limited) | starting rating: 1520 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 54 | Newcomb, Dorian (1518) | Won 2-1 | +181538 |
| 3sealed | 243 | Stone, Evan (1504) | Won 2-0 | +171555 |
| 4sealed | 134 | Ochoa, David (1957) | Lost 0-2 | -111544 |
| 5sealed | 158 | D'Angelo, Christopher (1536) | Lost 1-2 | -181526 |
| 6sealed | 293 | Goldberg, Frazer (1632) | Won 2-1 | +201546 |
| 7sealed | 191 | Park, Sean (1596) | Lost 1-2 | -171529 |
| top | average opponent: 1624record: 3-3 | new rating: 1529 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 2legacy | 790 | Keith, Jody (1904) | Lost 1-2 | -121520 |
| 3legacy | 1132 | Ware, Lane (1540) | Won 2-0 | +191539 |
| 4legacy | 906 | Frazier, Tyler (1576) | Draw 1-1 | 01539 |
| 5legacy | 839 | Hess, Alex (1472) | Lost 0-2 | -191520 |
| top | average opponent: 1623record: 1-2-1 | new rating: 1520 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 173 | Moore-Jansen, Rorik (1517) | Won 2-0 | +191503 |
| 3modern | 186 | Ellis, Christopher (1536) | Won 2-0 | +181521 |
| 4modern | 17 | Majors, Michael (1893) | Lost 1-2 | -111510 |
| 5modern | 165 | Furst, Vivianne (1502) | Won 2-0 | +171527 |
| 6modern | 47 | Reckenberger, Hunter (1623) | Won 2-1 | +201547 |
| 7modern | 105 | Bishop, James (1564) | Lost 0-2 | -181529 |
| 8modern | 137 | Holcomb, David (1573) | Won 2-1 | +191548 |
| 9modern | 50 | Manning, Andre (1632) | Lost 1-2 | -161532 |
| top | average opponent: 1605record: 5-3 | new rating: 1532 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 341 | Harder, Robert (1500) | Won 2-1 | +181518 |
| 2legacy | 177 | Chagnon, Cody (1513) | Lost 1-2 | -181500 |
| 3legacy | 428 | Steward, Kenneth (1503) | Won 2-1 | +181518 |
| 4legacy | 276 | Ramlow, Trevor (1481) | Won 2-1 | +171535 |
| 5legacy | 192 | Reed, David (1496) | Lost 0-2 | -181517 |
| 6legacy | 377 | Battle, Daniel L (1635) | Lost 0-2 | -161501 |
| 7legacy | 447 | Andrews, Joey (1566) | Lost 1-2 | -171484 |
| top | average opponent: 1528record: 3-4 | new rating: 1484 | ||