Mackay, John C
Current rating: 1480
Record: 2-3
| Grand Prix Miami 2015 (FRF standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 249 | Cordero, Irving (1446) | Won 2-0 | +171517 |
| 2standard | 93 | Nunez S, JoseLuis (1518) | Lost 0-2 | -181499 |
| 3standard | 410 | Mitchell, Jaymes A (1466) | Won 2-1 | +171516 |
| 4standard | 226 | Colon, John (1519) | Lost 1-2 | -181498 |
| 5standard | 338 | Martinez, Nicholas (1487) | Lost 1-2 | -181480 |
| average opponent: 1487record: 2-3 | new rating: 1480 | |||