Stefan Bell salvaged a last-gasp point for Mainz to end Freiburg's recent revival with a 2-2 draw at the Coface Arena.
Speculation has suggested that Philipp Wollscheid could see a loan deal at Mainz cut short but he is ignoring move talk.
Bayern Munich won to move seven points clear in the Bundesliga as a Werder Bremen win sent Borussia Dortmund bottom.
Bayer Leverkusen were frustrated in their search for three points as they were held to a goalless draw by Mainz.
Bayern Munich took the honours in the big clash in the Bundesliga, coming from behind to beat Borussia Dortmund 2-1.
Werder Bremen picked up their first win of the season on Viktor Skripnik's league debut as coach, beating Mainz 2-1.
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