Donato Mazzarelli
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Monza Sociale op | 04/20/2006 | 708 | Italy |
| Brianza-ch | 02/01/2006 | 912 | Italy |
| Lombardia-ch | 05/14/2005 | 1698 | Italy |
Most Played Openings as White
| ECO | Opening | Games |
| B54 | Sicilian | 1 games |
| C01 | French, exchange variation | 1 games |
| C67 | Ruy Lopez, Berlin defence, open variation | 1 games |
| C89 | Ruy Lopez, Marshall counter-attack | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| C45 | Scotch game | 1 games |
| D07 | Queen's Gambit Declined, Chigorin defence | 1 games |
| D85 | Gruenfeld, exchange variation | 1 games |
| D86 | Gruenfeld, exchange, classical variation | 1 games |


Italy