J. O'Donovan
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Buenos Aires ol (Men) prel-C | 08/24/1939 | 0 | Argentina |
| Buenos Aires ol (Men) f-B | 09/??/1939 | 0 | Argentina |
Most Played Openings as White
| ECO | Opening | Games |
| A02 | Bird's opening | 2 games |
| C97 | Ruy Lopez, closed, Chigorin defence | 1 games |
| C18 | French, Winawer, advance variation | 1 games |
| A06 | Reti opening | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| E23 | Nimzo-Indian, Spielmann, 4...c5, 5.dc Nc6 | 2 games |
| E00 | Queen's pawn game | 1 games |
| C77 | Ruy Lopez, Morphy defence | 1 games |
| E38 | Nimzo-Indian, classical, 4...c5 | 1 games |


Argentina