Maddox, Zachary
Current rating: 1567
| Grand Prix Columbus 2016 (legacy) | starting rating: 1532 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 476 | Vang, Xue (1482) | Won 2-1 | +171549 |
| 2legacy | 294 | Gascoigne, Kyle (1518) | Won 2-1 | +181567 |
| 3legacy | 256 | Seawell, Ryan (1446) | Won 2-0 | +161583 |
| 4legacy | 3 | Boianghu, Keenan (1579) | Won 2-1 | +181601 |
| 5legacy | 33 | Goldfarb, David (1767) | Lost 1-2 | -151586 |
| 6legacy | 121 | Chambers, Seth (1561) | Won 2-0 | +171603 |
| 7legacy | 63 | Smith, Darren (1573) | Lost 1-2 | -181585 |
| 8legacy | 176 | Accetturo, Vince (1620) | Lost 0-2 | -181567 |
| top | average opponent: 1568record: 5-3 | new rating: 1567 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1534 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 1710 | Kassof, Brandon (1500) | Won 2-0 | +171551 |
| 2legacy | 1435 | Bisson, Stephane (1598) | Won 2-1 | +191570 |
| 3legacy | 1493 | Hillman, Lowell (1578) | Lost 0-2 | -181552 |
| 4legacy | 1571 | Cox, Paul (1500) | Won 2-0 | +171569 |
| 5legacy | 1585 | Bauman, David (1566) | Lost 0-2 | -181551 |
| 6legacy | 1702 | Schiren, Bryan (1499) | Lost 0-2 | -191532 |
| top | average opponent: 1540record: 3-3 | new rating: 1532 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 500 | Lyon, JohnJack (1500) | Won 2-0 | +181518 |
| 2modern | 128 | Dempsey, Brandon (1500) | Lost 0-2 | -181500 |
| 3modern | 326 | Hart, Matt (1502) | Won 2-0 | +181518 |
| 4modern | 262 | Fuller, Jonathan (1417) | Won 2-0 | +161534 |
| top | average opponent: 1480record: 3-1 | new rating: 1534 | ||