Match Report: Borussia Dortmund 3 Bayern Munich 2 (Watch All Goals)
Leaders Borussia Dortmund twice came from behind to beat German champions Bayern Munich in a five-goal thriller.
Marco Reus twice cancelled out Robert Lewandowski goals, but it was Alcacer who struck the decisive blow in the 73rd minute at Signal Iduna Park on Saturday.
Robert Lewandowski broke the deadlock against his former club after heading home from the edge of the six-yard box.
Dortmund started the second half in similar fashion to the first and equalised from the penalty spot in the 49th minute, Reus beating Neuer from 12 yards after being fouled by the goalkeeper.
Lewandowski headed Bayern back into the lead before two goals in six second-half minutes by Reus and Paco Alcacer won it for Dortmund.
With the win Dortmund are seven points ahead of Bayern Munich.
Watch all the goals below.