Mackey, Martin Heath
Current rating: 1531
Record: 8-7
| Grand Prix Los Angeles 2019 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 244 | Horn, Paul (1500) | Lost 1-2 | -181482 |
| 2modern | 449 | McCulley, Lance (1363) | Won 2-0 | +161498 |
| 3modern | 592 | Valdes Samtos, Orlando (1499) | Won 2-0 | +181516 |
| 4modern | 205 | Cockrell, Derek (1713) | Won 2-1 | +211537 |
| 5modern | 115 | Skallerup, Perhansa (1604) | Won 2-1 | +201557 |
| 6modern | 138 | Stern, Jon (1775) | Won 2-0 | +221579 |
| 7modern | 80 | Paredes, Marcos (1798) | Lost 1-2 | -151564 |
| 8modern | 193 | Palmer, Christopher (1561) | Won 2-0 | +181582 |
| 9modern | 141 | Ruiz, Ricky (1578) | Lost 0-2 | -181564 |
| 10modern | 136 | Crone, Jason (1632) | Lost 0-2 | -161548 |
| 11modern | 138 | Wastella, Anthony (1543) | Won 2-0 | +181566 |
| 12modern | 125 | Terradura, Claudio (1537) | Lost 1-2 | -191547 |
| 13modern | 127 | Hayes, Brandon (1668) | Lost 1-2 | -161531 |
| 14modern | 120 | Nguyen, Philip (1504) | Lost 1-2 | -181513 |
| 15modern | 116 | Kerans, Spencer (1524) | Won 2-0 | +181531 |
| average opponent: 1587record: 8-7 | new rating: 1531 | |||