Best moments of Ralph DALEIDEN CIUFERRI
- Semifinal in the 100m freestyle at the 2024 European Championships, 13th place – Serbia, Belgrade.
- Final and 2nd place at the 2023 European U23 Championships in the 100m freestyle – Dublin, Ireland.
- First Luxembourg swimmer under 49 seconds in the 100m freestyle at the 2023 World Championships with a time of 48.77 seconds (national record at the time), 26th place – Fukuoka, Japan.
- Finalist in the 100m freestyle at the 2021 Junior European Championships and first Luxembourg swimmer under 50 seconds – Rome, Italy.