Borussia Moenchengladbach maintained their strong recent record against Bayern Munich as a record-breaking performance from 'keeper Yann Sommer helped secure a 1-1 away draw on Saturday.
Sommer's 19 saves in one game is the most in the Bundesliga since record-keeping started in 1993-94, easily eclipsing the previous record of 14.
Gladbach coach Daniel Farke lauded Sommer's "world-class performance" and his side's "show of will".
"Normally you are disappointed when you get a late equaliser. It's different today."
Bayern began in dominant fashion, pinning Gladbach in their own penalty area.
Former Liverpool striker Sadio Mane had the ball in the net twice in two minutes in the first half, but both efforts were pulled back for offside.
With Bayern launching wave after wave of relentless pressure, a goal seemed a mere formality, but it was the visitors who took the lead when French striker Marcus Thuram took advantage of an error from countryman Dayot Upamecano to put his side up 1-0 in the shadows of halftime.
Bayern continued to dominate and almost equalised in the 61st minute through Mane, but Sommer somehow stopped the Senegalese twice in quick succession from close range, before pulling off a one-on-one stop against Leroy Sane.
Jamal Musiala, brought on by Nagelsmann with 67 minutes gone, set up the equaliser in the 82nd minute, sliding a pass through for Sane to curl the ball past Sommer into the net.