Paderborn slipped into the bottom two of the Bundesliga after being held to a goalless draw at home by 10-man Hoffenheim on Saturday.
Augsburg's hopes of playing in Europe next season suffered a setback as they were beaten 2-0 at home by Mainz.
Hoffenheim narrowed the gap on the top six in the Bundesliga by claiming a 3-0 win over 10-man Hamburg.
Schalke got back to winning ways after a four-game streak without one in style with a 3-1 win over Hoffenheim.
Hoffenheim moved to within two points of the top six as they downed struggling Mainz 2-0 in Sinsheim.
Freiburg missed an opportunity to move out of the bottom three as they were held to a 1-1 draw Hoffenheim.
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