| Name: | Marcel Mattos |
| Federation: |  |
| Years: | 1997 - 2003 |
| Total Games: | 5 |
| Wins: | 2 (40 %) |
| Draws: | 0 (0 %) |
| Losses: | 3 (60 %) |
| Score: | 40 % |
| Tournament | Date | Elo Avg. | Country |
| Montevideo Club Modelo op | 05/??/2003 | 1553 |  Uruguay |
| URU-chT | ??/??/1997 | 393 | Uruguay |
| ECO | Opening | Games |
| C56 | Two knights defence | 1 games |
| ECO | Opening | Games |
| B56 | Sicilian | 1 games |
| C01 | French, exchange variation | 1 games |
| A40 | Queen's pawn | 1 games |
| C55 | Two knights defence | 1 games |
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Ferrari, C | 2035 | Mattos, M | 1-0  |
43 | B56 | 2003 | Montevideo Club Modelo op |
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| Mattos, M | Obendorfer, A | 1-0 |
16 | C56 | 1997 | URU-chT |
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| Figueredo, L | 1900 | Mattos, M | 1-0 |
35 | C01 | 1997 | URU-chT |
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| Miralles, N | Mattos, M | 1-0 |
31 | A40 | 1997 | URU-chT |
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| Rebella, A | Mattos, M | 0-1 |
43 | C55 | 1997 | URU-chT |
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