Long, Marshall
Current rating: 1435
| Grand Prix New Jersey 2020 (THB limited) | starting rating: 1434 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 25 | Palermo, Thomas (1500) | Won 2-1 | +191453 |
| 2sealed | 289 | Krempels, Craig (2017) | Lost 0-2 | -81445 |
| 3sealed | 484 | Smith, Frank (1574) | Won 2-1 | +201465 |
| 4sealed | 213 | Demers, Francois (1585) | Lost 0-2 | -161449 |
| 5sealed | 346 | Wong, Matthew (1675) | Lost 0-2 | -141435 |
| top | average opponent: 1670record: 2-3 | new rating: 1435 | ||
| Grand Prix Washington DC 2019 (MH1 limited) | starting rating: 1484 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 158 | Yatsenko, Alex (1462) | Lost 1-2 | -181466 |
| 4sealed | 248 | Maples, Derek (1515) | Lost 0-2 | -171449 |
| 5sealed | 300 | Van Hecke, Bjorn (1632) | Lost 0-2 | -151434 |
| top | average opponent: 1536record: 0-3 | new rating: 1434 | ||
| Grand Prix Atlanta 2015 (BFZ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 151 | Lu, Peter (1680) | Won 2-1 | +211521 |
| 2sealed | 124 | Hickey, Gabriel (1535) | Lost 1-2 | -171504 |
| 3sealed | 713 | Killelea, Michael (1500) | Won 2-0 | +171521 |
| 4sealed | 252 | Carlson, Brittany (1448) | Lost 1-2 | -191502 |
| 5sealed | 573 | Okowita, Alex (1512) | Lost 0-2 | -181484 |
| top | average opponent: 1535record: 2-3 | new rating: 1484 | ||