Dalgas spent his youth years at
Vejle Boldklub, alongside
Thomas Gravesen, and made his senior debut for the club in April 1995. He was called up for the
Denmark under-21 national team in September 1997, and played a single game for the team. 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. His year at the club resulted in 22 league goals and the joint league top scorer title with
Peter Madsen from
Brøndby IF. After the season, he was bought by new Brøndby IF coach
Michael Laudrup. He would play all league matches in his first year at Brøndby, and Dalgas was named
man of the match when he scored in the 2003
Danish Cup 3–0 final win against
FC Midtjylland. Injuries ruined his next season, as he was struggling to recover from a complicated
knee injury. He would not play a single match for Brøndby from April 2004 to November 2005. He came on as a substitute in the November 2005
Royal League match against
Kalmar FF, which was to be his last professional game. Dalgas ended his career in March 2006, as a knee scan had shown no healing of his knee injury. ==Honours==