Bayern Munich boss Vincent Kompany had a clear message for his players following their shock 2-1 defeat away at Mainz, which was their first Bundesliga loss of the season. 

Lee Jae-Sung struck twice either side of half-time, and despite Leroy Sane reducing the deficit late on, Bo Henriksen's side were able to hold on for a huge triumph. 

Mainz have now won four of their last five Bundesliga home games against Bayern. Since the start of the 2020-21 campaign, no other side has won more against them. 

It also marks Kompany's first league defeat since taking the reins at the Allianz Stadium, having only lost in the Champions League and DFB-Pokal in his debut season. 

And Bayern struggled at the Mewa Arena, despite becoming the only team to score in all of their 14 Bundesliga games so far this season. 

Kompany's side managed an expected goals (xG) total of 1.48 from their 13 efforts, though they had just one on target, which came from Sane's strike late on. 

On the back of feeling frustrated at seeing his streak ended, Kompany insisted there was no time to dwell on the result, ahead of hosting RB Leipzig in their final game of 2024. 

"We played against a team with a lot of life and spirit, they were prepared to fight for every moment," Kompany said post-game.

"From our side, there was not a lack of fighting. We did that to the best of our ability. Today we were just not at our best. 

"This game, we can't play it any more, it's done. We'll use it to build a fire for next week. That's the only way to give an answer.

"We can't win this game in Mainz this year, but in the future, we're looking forward to it."

The clash with Leipzig is followed by a three-week break from league action, as the Bundesliga hits pause until mid-January. 

Bayern are still top of the Bundesliga table, but saw their lead reduced to four points on Saturday after champions Bayer Leverkusen beat Augsburg 2-0.