Kostyantyn Mazur
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US Amateur Team-ch East | 02/14/2009 | 676 |  United States |
Most Played Openings as White
| ECO | Opening | Games |
Most Played Openings as Black
| ECO | Opening | Games |
| A60 | Benoni defence | 1 games |
| A34 | English, symmetrical variation | 1 games |
