Lucas Barrios scored one goal and was involved in the other on Saturday as Bundesliga leader Borussia Dortmund won 2-0 at home against St. Pauli.
St. Pauli could only muster one attack before Dortmund deservedly took the lead in the 39th minute.
Barrios controlled Nuri Sahin's cross with his left before turning and slotting the ball with his weaker right past goalkeeper Thomas Kessler.
St. Pauli defender Ralph Gunesch was unlucky to knock in a cross from Barrios in the 49th.
Hamburger SV won 4-0 against Werder Bremen, with two goals from Jose Paolo Guerrero.
Freiburg beat Wolfsburg 2-1, Hannover beat Kaiserslautern 3-0, and Hoffenheim and Cologne drew 1-1.
Bayern Munich travels to Mainz in Saturday's late game.