Freiburg have continued their assault on a top-four finish in the Bundesliga with a clinical 1-0 victory over Hamburger SV at the Imtech Arena.
Thorsten Fink's men saw plenty of the ball in the first half, but failed to effectively test Oliver Baumann in the visitors' goal.
Son Heung-Min was guilty of missing two good opportunities from inside the area.
However, it was Jan Rosenthal who came closest to opening the scoring when Rene Adler pushed his header against the post.
Son continued to squander chances in the second half, and Rothosen were made to pay for it when Jonathan Schmid found the bottom left corner in the 69th minute.
That is the way it stayed until the final whistle, leaving the hosts labouring in ninth place.
