Dalgas spent his youth years at Vejle Boldklub, alongside Thomas Gravesen, and made his senior debut for the club in April 1995.
Dalgas played several seasons as an attacking midfielder for Vejle, but following the club's difficulties in remaining in the top-flight Danish Superliga division, he moved to Superliga club Odense Boldklub (OB) in 2001.
At OB he experienced a short, but extremely successful, stint, playing as a forward.
He came on as a substitute in the November 2005 Royal League match against Kalmar FF, which was to be his last professional game.
This biographical article related to association football in Denmark, about a forward, is a stub.