B. Rivarola
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Asuncion | ??/??/1960 | 0 | Paraguay |
| Atlantida | ??/??/1960 | 0 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| A05 | Reti opening | 1 games |
| A43 | Old Benoni defence | 1 games |
| B28 | Sicilian, O'Kelly variation | 1 games |
| B40 | Sicilian defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B41 | Sicilian, Kan variation | 2 games |
| A87 | Dutch, Leningrad, main variation | 1 games |
| B49 | Sicilian, Taimanov variation | 1 games |
| A48 | King's Indian, East Indian defence | 1 games |


Paraguay
Argentina