Byer, David
Current rating: 1425
| Grand Prix Tampa Bay 2019 (modern) | starting rating: 1417 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 191 | Greenslate, Justin (1464) | Won 2-0 | +181435 |
| 2modern | 135 | Betts, Jacob (1527) | Lost 0-2 | -161419 |
| 3modern | 311 | Kett, Dylan (1500) | Lost 0-2 | -161403 |
| 4modern | 352 | Webster, Keith (1484) | Lost 1-2 | -171386 |
| 5modern | 382 | Ondo, Chris (1464) | Lost 0-2 | -171369 |
| 6modern | 335 | Morel, Zachary (1463) | Won 2-0 | +201389 |
| 7modern | 263 | Galatro, Vito (1425) | Won 2-0 | +191408 |
| 8modern | 208 | Roberts, Jonathan (1344) | Won 2-1 | +171425 |
| top | average opponent: 1459record: 4-4 | new rating: 1425 | ||
| Grand Prix Las Vegas 2017 (legacy) (legacy) | starting rating: 1479 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 2155 | McCann, Barbara (1459) | Won 2-1 | +171496 |
| 2legacy | 272 | Schmaltz Tziritas, Mathew (1831) | Lost 1-2 | -121484 |
| 3legacy | 717 | Lightfoot, Ethan (1514) | Lost 1-2 | -171467 |
| 4legacy | 1016 | Gerard, Stephane (1661) | Lost 1-2 | -151452 |
| 5legacy | 1045 | Akhundzadeh, Amir (1433) | Lost 1-2 | -181434 |
| 6legacy | 987 | Stetson, Sage (1452) | Lost 0-2 | -181416 |
| 7legacy | 908 | Mendez, James (1415) | Won 2-0 | +181434 |
| 8legacy | 747 | Arroyo, Josue (1450) | Lost 0-2 | -171417 |
| top | average opponent: 1527record: 2-6 | new rating: 1417 | ||
| Grand Prix Columbus 2016 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 504 | Lageman, Sean (1446) | Lost 1-2 | -191481 |
| 2legacy | 572 | Ankrom, Travis (1505) | Lost 1-2 | -181463 |
| 3legacy | 788 | Lombas, Jacob (1465) | Won 2-0 | +191482 |
| 4legacy | 771 | Perciavalle, Chris (1465) | Won 2-0 | +171499 |
| 5legacy | 603 | Michael, Benjamin (1502) | Won 2-0 | +181517 |
| 6legacy | 329 | Champeny, Robert (1510) | Lost 1-2 | -181499 |
| 7legacy | 503 | Metelsky, Michael (1425) | Lost 0-2 | -191480 |
| 8legacy | 514 | Rodaitis, Andrew (1476) | Lost 1-2 | -181462 |
| 9legacy | 475 | Storms, Robert (1412) | Won 2-1 | +171479 |
| top | average opponent: 1467record: 4-5 | new rating: 1479 | ||