J. Diaz Perez
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Buenos Aires ol (Men) prel-A | 08/24/1939 | 0 |  Argentina |
| Buenos Aires ol (Men) f-B | 09/??/1939 | 0 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| B70 | Sicilian, dragon variation | 2 games |
| D85 | Gruenfeld, exchange variation | 1 games |
| E70 | King's Indian, 4.e4 | 1 games |
| C86 | Ruy Lopez, Worrall attack | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E01 | Catalan, closed | 1 games |
| B02 | Alekhine's defence | 1 games |
| D40 | Queen's Gambit Declined, Semi-Tarrasch defence | 1 games |
| E23 | Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6 | 1 games |
