Matthew Douglas Jonker
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| World ol U16 | 08/02/2003 | 1121 |  Turkey |
| World ol U16 | 08/20/2002 | 1013 |  Malaysia |
Matthew Douglas Jonker Opening Repertoire with White pieces
| ECO | Opening | Games |
| B32 | Sicilian defence | 2 games |
| C14 | French, classical variation | 2 games |
| B08 | Pirc, classical (two knights) system | 1 games |
| B76 | Sicilian, dragon, Yugoslav attack, 7...O-O | 1 games |
Matthew Douglas Jonker Opening Repertoire with Black pieces
| ECO | Opening | Games |
| E97 | King's Indian, orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation) | 3 games |
| B50 | Sicilian | 2 games |
| B53 | Sicilian, Chekhover variation | 1 games |
| B13 | Caro-Kann, exchange variation | 1 games |
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