Marks, Gregory
Current rating: 1517
Record: 4-3
| Grand Prix Toronto 2015 (DTK standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 249 | Dhaliwal, Shawn (1500) | Won 2-1 | +181518 |
| 2standard | 355 | Landry, Jerome (1518) | Lost 1-2 | -181500 |
| 3standard | 437 | DeChamplain, Aaron (1500) | Won 2-1 | +181518 |
| 4standard | 431 | Whitsitt, Jonathan (1502) | Lost 0-2 | -181500 |
| 5standard | 565 | Lessard, John (1449) | Lost 0-2 | -191481 |
| 6standard | 532 | Gadal, Adam (1483) | Won 2-0 | +181499 |
| 7standard | 345 | Shoemaker, William (1500) | Won 2-0 | +181517 |
| average opponent: 1493record: 4-3 | new rating: 1517 | |||