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Sebastian Dalgaard joined the Rowdies as a trialist in preseason before the start of the 2020 campaign. He impressed enough to earn a full-time contract.
In 2020, Dalgaard became a regular for the Rowdies in midfield, playing 17 matches and recording 2 assists.
Dalgaard spent the 2019 season with the Hartford Athletic, playing in 27 matches and scoring five goals and adding two assists.
Prior to Hartford, Dalgaard played one season with Saint Louis FC and two with OKC Energy FC. He has also played for BK Marienlyst, Brønshøj BK and Middelfart G&BK in his native Denmark.