Wolfsburg failed to make significant inroads on Bayern Munich at the top of the Bundesliga as they were held by Mainz.
Bayern Munich suffered their first home defeat of the season as Raffael's double secured a 2-0 win for Borussia Moenchengladbach.
Augsburg's hopes of playing in Europe next season suffered a setback as they were beaten 2-0 at home by Mainz.
Mainz came from two goals down to snatch a point at home to Borussia Monchengladbach.
Hoffenheim moved to within two points of the top six as they downed struggling Mainz 2-0 in Sinsheim.