Mandel, John
Current rating: 1464
Record: 1-3
| Grand Prix Toronto 2012 (modern) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 118 | Offord, Andrew (1500) | Won 2-1 | +181518 |
| 2modern | 81 | Bolton, Russell (1505) | Lost 1-2 | -181500 |
| 3modern | 228 | Clark, Tony (1499) | Lost 1-2 | -181482 |
| 4modern | 437 | Keller, Christian (1512) | Lost 1-2 | -181464 |
| average opponent: 1504record: 1-3 | new rating: 1464 | |||