Mainz 05 have reached the half-time interval level with Bayern Munich after Thomas Muller missed a penalty in a goalless first half.
Pep Guardiola's side were in charge in the early stages of the match, but a stubborn Mainz defence made it difficult for the visitors to carve out openings.
After a quiet opening spell, Bayern were gifted the opportunity to break the deadlock when Pablo De Blasis brought down Kingsley Coman inside the box.
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Muller stepped up from 12 yards, but the home fans were left breathing a sigh of relief when the World Cup winner slipped on the way to sending his penalty over the crossbar.
Mainz threatened to take the lead against the run of play when Yoshinori Muto created space by evading a couple of challenges before shooting just wide of the post.
However, Bayern remained on top heading into the interval, with Douglas Costa's powerful long-range strike producing a fine save from Loris Karius.
