Marck, Alex
Current rating: 1444
Record: 2-5-1
| Grand Prix Toronto 2013 (THS limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 160 | Santa, Richard (1500) | Lost 0-2 | -181482 |
| 2sealed | 586 | Woodley, Dan (1503) | Won 2-1 | +181500 |
| 3sealed | 481 | Ribeiro, David Antonio (1615) | Lost 0-2 | -161484 |
| 4sealed | 535 | Gawronski, George (1431) | Lost 0-2 | -191465 |
| 5sealed | 572 | Raschewski, Willie R (1465) | Won 2-0 | +181483 |
| 6sealed | 482 | Martineau, Robert (1477) | Lost 1-2 | -181465 |
| 7sealed | 53 | Fritz, James (1280) | Draw 1-1 | -31462 |
| 8sealed | 312 | Williams, Gabriel (1461) | Lost 0-2 | -181444 |
| average opponent: 1466record: 2-5-1 | new rating: 1444 | |||