Costa Rica
Male
FIDE ID:
Sergio Duran Vega
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| 360 One Masters 2026 | 06/10/2026 | 2355 |  India |
| 4th Gujarat Open 2026 | 06/01/2026 | 2230 | India |
| 17th KIIT Cat A Open 2026 | 05/23/2026 | 2227 | India |
| Radnicki CC IM 3 2026 | 03/01/2026 | 2244 |  Serbia |
Most Played Openings as White
| ECO | Opening | Games |
| E04 | Catalan, open, 5.Nf3 | 4 games |
| D02 | Queen's pawn game | 4 games |
| A15 | English, 1...Nf6 (Anglo-Indian defense) | 3 games |
| A20 | English opening | 3 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B33 | Sicilian defence | 9 games |
| B31 | Sicilian, Nyezhmetdinov-Rossolimo attack (with ...g6, without ...d6) | 9 games |
| D37 | Queen's Gambit Declined, 4.Nf3 | 7 games |
| A07 | Reti, King's Indian attack (Barcza system) | 4 games |
