Marchant, Sam
Current rating: 1479
Record: 16-19
| Grand Prix Memphis 2019 (RNA standard) | starting rating: 1475 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 278 | Diaz, Anthony (1629) | Won 2-1 | +211496 |
| 2standard | 190 | Patton, William (1563) | Lost 0-2 | -171479 |
| 3standard | 377 | Marconi, Nick (1522) | Lost 1-2 | -171462 |
| 4standard | 367 | Drew, Council (1386) | Won 2-0 | +171479 |
| 5standard | 361 | Vaughn, Steven (1459) | Won 2-0 | +171496 |
| 6standard | 232 | Clement, Nathan (1516) | Lost 1-2 | -171479 |
| top | average opponent: 1512record: 3-3 | new rating: 1479 | ||
| Grand Prix Atlanta 2018 (modern) | starting rating: 1439 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 357 | Sisk, Tyler (1500) | Won 2-1 | +191458 |
| 2modern | 268 | Cole, J. (1518) | Won 2-1 | +191477 |
| 3modern | 15 | Baggs, Jacob (1538) | Won 2-0 | +201497 |
| 4modern | 181 | Shaw, Justin (1484) | Won 2-1 | +171514 |
| 5modern | 21 | Olea Garcia, Alejandro (1644) | Won 2-1 | +211535 |
| 6modern | 39 | Lim, Zhong Yi (1900) | Lost 1-2 | -121523 |
| 7modern | 78 | Gassaway, Ryan (1657) | Won 2-0 | +201543 |
| 8modern | 63 | Steiner, Ryan (1705) | Lost 0-2 | -151528 |
| 9modern | 62 | Taxi Beng, Ong Shu Liang (1550) | Lost 1-2 | -171511 |
| 10modern | 128 | Moody, Mitchell (1514) | Lost 1-2 | -181493 |
| 11modern | 141 | Bryant, Jason (1526) | Lost 1-2 | -181475 |
| top | average opponent: 1594record: 6-5 | new rating: 1475 | ||
| Grand Prix Memphis 2018 (RIX standard) | starting rating: 1454 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 241 | Irvine, Daniel (1446) | Won 2-0 | +181472 |
| 2standard | 194 | Vasko, Ben (1519) | Lost 1-2 | -171455 |
| 3standard | 366 | Tiszai, Stephen (1500) | Lost 0-2 | -171438 |
| 4standard | 380 | Kirkpatrick, Greg (1470) | Won 2-0 | +181456 |
| 5standard | 343 | Kibler, David (1499) | Lost 1-2 | -171439 |
| top | average opponent: 1487record: 2-3 | new rating: 1439 | ||
| Grand Prix Atlanta 2017 (XLN standard) | starting rating: 1495 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 23 | Peace, Matthew (1451) | Lost 1-2 | -191476 |
| 2standard | 528 | Farrell, Geoff (1364) | Lost 1-2 | -201456 |
| 3standard | 618 | LeMay, Brandon (1458) | Lost 0-2 | -181438 |
| 4standard | 658 | Bray, Ian (1450) | Won 2-0 | +191457 |
| 5standard | 600 | Sargent, Nick (1466) | Won 2-0 | +181475 |
| 6standard | 502 | Yannarella, David (1343) | Lost 0-2 | -211454 |
| top | average opponent: 1422record: 2-4 | new rating: 1454 | ||
| Grand Prix Orlando 2017 (AER limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 816 | Brier, Aiden (1500) | Won 2-1 | +181518 |
| 2sealed | 560 | Maier, Christopher (1858) | Lost 0-2 | -121506 |
| 3sealed | 929 | Cohen, Matthew (1640) | Lost 0-2 | -161490 |
| 4sealed | 1086 | Bryant, Andrew R (1548) | Won 2-0 | +191509 |
| 5sealed | 957 | Hampton, Nathan (1478) | Won 2-1 | +181527 |
| 6sealed | 809 | McDonough, Ryan (1605) | Lost 0-2 | -171510 |
| 7sealed | 861 | Hicks, Steven (1668) | Lost 1-2 | -151495 |
| top | average opponent: 1614record: 3-4 | new rating: 1495 | ||