Leroy Sane (right) scored his seventh league goal of the season to put Bayern ahead
Bayern Munich failed to win for a second consecutive Bundesliga game as they were held to a draw at Union Berlin.
After toiling for 75 minutes, Bayern appeared to have found the win to move them 11 points clear at the top through Leroy Sane.
But Benedict Hollerbach equalised eight minutes later to earn a point for Union and move them further clear of the relegation zone.
At the top of the German league, it means Bayer Leverkusen can close the gap with Bayern to six points if the reigning champions beat Stuttgart on Sunday evening.
Bayern took the lead when Michael Olise picked the lock with a clever in behind to Josip Stanisic.
Stanisic cut it back towards the penalty spot where Sane nipped in to finish.
After being shocked on their 125th anniversary by Bochum last weekend, Bayern appeared to have recovered as they knocked Leverkusen out of the Champions League in midweek.
But Vincent Kompany's side suffered a setback as 21-year-old keeper Jonas Urbig - playing in just his third league game - spilled a cross, allowing Hollerbach to volley home.
The point moves Union seven points clear of the Bundesliga relegation play-off spot.
