Mark Stefanski
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Michigan Class A | 01/15/2005 | 1880 | United States |
| Kalamazoo op | 10/25/2003 | 1248 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| A56 | Benoni defence | 1 games |
| C22 | Centre game | 1 games |
| C01 | French, exchange variation | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C15 | French, Winawer (Nimzovich) variation | 1 games |
| A52 | Budapest defence | 1 games |


United States