Bosz, who formerly coached Dortmund, has replaced Heiko Herrlich, who was fired on Dec. 23 despite a run of four wins from five games in all competitions. The club said there had been a “stagnation” in development.
Mainz held on to win 3-2 at Stuttgart despite the home side’s rally with two late goals. Stuttgart also hit the post in the final minutes and had a penalty appeal turned down.
Eintracht Frankfurt won 3-1 at home against Freiburg, Fortuna Duesseldorf beat Augsburg 2-1 and Werder Bremen won 1-0 at Hannover.
Second-placed Bayern defeated Hoffenheim 3-1 on Friday when the league resumed after a break of almost four weeks.
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