Mackey, Benjamin
Current rating: 1537
Record: 8-6
| Grand Prix Dallas-Fort Worth 2018 (DOM limited) | starting rating: 1561 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 219 | Thyng, Andrew (1500) | Lost 0-2 | -191542 |
| 2sealed | 317 | Santos, Brandon (1443) | Won 2-0 | +161558 |
| 3sealed | 413 | Swain, Thomas (1520) | Lost 1-2 | -191539 |
| 4sealed | 452 | Kirkley, Kyle (1437) | Won 2-1 | +161555 |
| 5sealed | 301 | DeMartini, Jared (1534) | Lost 0-2 | -181537 |
| average opponent: 1487record: 2-3 | new rating: 1537 | |||
| Grand Prix Boston-Worcester 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 1024 | Larose, Michael (1673) | Won 2-0 | +211521 |
| 2modern | 718 | Broderick, Zachary (1518) | Won 2-0 | +181539 |
| 3modern | 772 | Manzi, Matthew (1538) | Won 2-1 | +181557 |
| 4modern | 815 | Leger, Francis (1464) | Won 2-1 | +161573 |
| 5modern | 749 | Diab, Kenan (1551) | Won 2-0 | +181591 |
| 6modern | 956 | Kelahan, Seamus (1796) | Lost 0-2 | -141577 |
| 7modern | 735 | Beldon, Omar (1657) | Lost 0-2 | -171560 |
| 8modern | 847 | Dreyer, Vernon (1527) | Won 2-0 | +171577 |
| 9modern | 770 | McAllister, Bob (1644) | Lost 1-2 | -161561 |
| average opponent: 1596record: 6-3 | new rating: 1561 | |||