McGarry, John K
Current rating: 1445
Record: 0-3
| Grand Prix Detroit 2013 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 110 | Walsh, Steve (1463) | Lost 1-2 | -191481 |
| 2modern | 409 | Marshall Reber, James (1483) | Lost 0-0 | -181463 |
| 3modern | 603 | Olszowy, John h (1436) | Lost 0-2 | -181445 |
| average opponent: 1461record: 0-3 | new rating: 1445 | |||