Boss, Samuel
Current rating: 1489
Record: 11-14
| Grand Prix Kobe 2017 (modern) | starting rating: 1499 | |||
| round | table | opponent (rating) | result | Δrating |
| 3modern | 231 | Kageyama, Hiroki (1709) | Lost 1-2 | -151484 |
| 4modern | 886 | Ayama, Takashi (1695) | Lost 0-2 | -141470 |
| 5modern | 876 | Furukawa, Takuto (1454) | Won 2-0 | +181488 |
| 6modern | 780 | Takahashi, Ryo 8120 (1491) | Lost 1-2 | -181470 |
| 7modern | 646 | Fuchimoto, Manabu (1509) | Won 2-1 | +191489 |
| 8modern | 621 | Okada, Fumia (1550) | Won 2-0 | +191508 |
| 9modern | 403 | Matsuida, Naoki (1476) | Lost 1-2 | -191489 |
| top | average opponent: 1555record: 3-4 | new rating: 1489 | ||
| Grand Prix Charlotte 2016 (modern) | starting rating: 1463 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 54 | Bennett, Christopher (1455) | Won 2-0 | +171480 |
| 2modern | 47 | Villamizar, Daniel (1747) | Won 2-1 | +231503 |
| 3modern | 313 | Perez, Ruben (1873) | Lost 0-2 | -111492 |
| 4modern | 660 | Davis, John (1868) | Won 2-0 | +241516 |
| 5modern | 311 | Apperson, Michael (1500) | Won 2-0 | +181534 |
| 6modern | 296 | Vilseck, Keith (1649) | Won 2-1 | +201554 |
| 7modern | 150 | Whitehead, James S (1552) | Lost 1-2 | -181536 |
| 8modern | 151 | Woods, Jacob (1527) | Lost 1-2 | -181518 |
| 9modern | 358 | Messick, Thomas (1452) | Lost 0-2 | -191499 |
| top | average opponent: 1625record: 5-4 | new rating: 1499 | ||
| Grand Prix Charlotte 2015 (modern) | starting rating: 1452 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1019 | Rosenfeld, Ian (1499) | Won 2-1 | +191471 |
| 2modern | 711 | Donaldson, Mark (1561) | Won 2-1 | +201491 |
| 3modern | 851 | Ketter, Kent (1769) | Lost 1-2 | -131478 |
| 4modern | 813 | Daniel, Nick (1483) | Lost 1-2 | -181460 |
| 5modern | 860 | Ervin, Christopher (1501) | Lost 0-2 | -181442 |
| 6modern | 934 | Synan, David (1562) | Won 2-1 | +211463 |
| top | average opponent: 1563record: 3-3 | new rating: 1463 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 3legacy | 97 | Hanna, Will (1590) | Lost 0-2 | -161484 |
| 4legacy | 183 | Headley, Matthew (1701) | Lost 1-2 | -141470 |
| 5legacy | 371 | Everett, Michael (1499) | Lost 0-2 | -181452 |
| top | average opponent: 1597record: 0-3 | new rating: 1452 | ||