Sergio Costa
BACKGames
| Round | Date | Group | Team | Board | Opponent | Opponent team | Score | Color |
|---|---|---|---|---|---|---|---|---|
| 3 | Nov 9, 2025 | Division 3-B | DOB IV | 1 | Christos Christidis | JUN II | 1 | b |
| 6 | Jan 11, 2026 | Division 3-B | DOB IV | 3 | Sam Mersch | DIF VII | 1 | b |
| 7 | Feb 1, 2026 | Division 2 | DOB III | 4 | Emmannuel Rault | LUX II | 1 | b |
| 8 | Mar 1, 2026 | D3B-Poule basse | DOB IV | 5 | Alexander Golec | JUN II | 1 | w |