John Mackey
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Canadian op | 07/09/2005 | 1826 | Canada |
Most Played Openings as White
| ECO | Opening | Games |
| D40 | Queen's Gambit Declined, Semi-Tarrasch defence | 1 games |
| A90 | Dutch defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 1 games |
| D10 | Queen's Gambit Declined Slav defence | 1 games |


Canada