Mack, John
Current rating: 1445
Record: 0-3
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 104 | Torres, Kyle (1488) | Lost 0-2 | -181482 |
| 2sealed | 435 | Egna, Michael (1470) | Lost 0-2 | -181464 |
| 3sealed | 715 | Clarizio, James (1450) | Lost 0-2 | -191445 |
| average opponent: 1469record: 0-3 | new rating: 1445 | |||