Bundesliga: Bochum Stun Bayern In 6-Goal Riot

Bayern Munich slumped to a shock 4-2 loss at Bundesliga minnows Bochum ahead of Wednesday's Champions League clash with Red Bull Salzburg.

Bayern conceded four goals in the first half for the first time in a Bundesliga match since 1975 as promoted Bochum rampaged to victory, leaving the perennial champions stunned.

"This was our worst performance of the season. We need to ask ourselves whether this is the mentality which Bayern Munich embodies," a dejected Kimmich told Sky.

"Luckily it's happened in a Bundesliga match this time, but we have a Champions League game on Wednesday," he added.

Bayern had not lost to Bochum since 2004 ahead of this game and beat them 7-0 when the two teams last met in September.

When Robert Lewandowski bundled in the opener for Bayern on nine minutes, it seemed it would be a normal afternoon for the perennial champions.

But Bochum equalised quickly through Christopher Antwi-Adjei, before taking control in a frenzied 10 minutes before the break.

Juergen Locadia gave the hosts the lead from the penalty spot after a Dayot Upamecano handball, and unsettled Bayern wilted under pressure.

Cristian Gamboa smashed the ball into the top corner from the edge of the area two minutes later, before Holtmann curled in another brilliant long-range effort on the stroke of halftime.

"My first Bundesliga goal, and it comes against Bayern. It's like a dream!" Gamboa told Sky.

Lewandowski pulled a goal back in the second half, but it was too little for Bayern to avoid a fourth league defeat of the season.

After a week in which German football discussed a play-off format to combat Bayern's relentless dominance, recently promoted Bochum delivered a brutal reminder that the champions are not unbeatable.

Yet Bayern remain nine points clear at the top of the table overnight, ahead of Borussia Dortmund's trip to Union Berlin on Sunday.