Frederik Roslyng Christiansen (born 25 December 2005) is a Danish professional footballer who plays as a centre-back for 2. Bundesliga club Holstein Kiel. He is a Denmark youth international.
Club career Roslyng made his professional debut at the age of 17 with AC Horsens.
In August 2025 he joined German club Holstein Kiel, which had been relegated from the Bundesliga to the 2. Bundesliga the previous season, signing a contract until June 2029. The transfer fee paid to Horsens was reported as €1.2 million.
International career Roslyng has appeared for the Denmark U19 and Denmark U20 national teams.
Personal life Roslyng's parents Lars Christiansen and Christina Roslyng are former handball players. He was born in Flensburg, 7 kilometres from the Danish border, when his father Lars was playing for German side SG Flensburg-Handewitt.
Career statistics
+ Appearances and goals by club, season and competitionClubSeasonLeagueNational cupTotalDivisionAppsGoalsAppsGoalsAppsGoalsAC Horsens2023–24Danish 1st Division7000702024–25Danish 1st Division201202212025–26Danish 1st Division501060Total32140361Holstein Kiel II2025–26Oberliga Schleswig-Holstein10–10Holstein Kiel2025–262. Bundesliga200020Career total35140391
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