Eckstein, Zachary
Current rating: 1425
| Grand Prix Charlotte 2015 (modern) | starting rating: 1474 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 927 | Phelps, Jon M (1500) | Won 2-0 | +181492 |
| 2modern | 769 | Briggs, Benjamin (1629) | Lost 0-2 | -161476 |
| 3modern | 934 | Cornwall, Gary (1560) | Lost 0-2 | -161460 |
| 4modern | 1110 | Smoot, Kyle J (1483) | Lost 1-2 | -181442 |
| 5modern | 1019 | Howard, John M (1467) | Lost 0-2 | -171425 |
| top | average opponent: 1528record: 1-4 | new rating: 1425 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1506 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 232 | Pargh, David (1768) | Lost 0-2 | -141492 |
| 2sealed | 574 | De Melfi, Jason (1482) | Won 2-0 | +181510 |
| 3sealed | 685 | Saunders, Peter (1500) | Lost 0-2 | -181492 |
| 4sealed | 669 | Vegh, Michael (1469) | Lost 0-2 | -181474 |
| top | average opponent: 1555record: 1-3 | new rating: 1474 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1290 | Oliver, Larry (1500) | Won 2-0 | +181518 |
| 2modern | 1156 | Hrischuk, Brian (1516) | Won 2-0 | +181536 |
| 3modern | 1063 | Bowhall, Christian (1568) | Won 2-1 | +191555 |
| 4modern | 1040 | Skarren, Frank (1996) | Lost 0-2 | -111544 |
| 5modern | 1131 | Fulton, Randall (1466) | Lost 0-2 | -191525 |
| 6modern | 1286 | Brown, Nathan (1475) | Won 2-0 | +171542 |
| 7modern | 1173 | Waldron, Brett (1535) | Lost 1-2 | -181524 |
| 8modern | 1233 | Murray, Sean (1523) | Lost 0-2 | -181506 |
| top | average opponent: 1572record: 4-4 | new rating: 1506 | ||