The visitors somehow went into the break behind after dominating the first-half, but a goal seconds before the final whistle sealed an incredible comeback
Dortmund produced a dramatic comeback to overcome Mainz 2-1 at the Coface Arena.
A defensive mixup granted Nicolai Muller a shock opener for the hosts, but Ivan Perisic leveled for the visitors midway through the second half, and with seconds of injury time remaining, Lukasz Piszczek grabbed a late winner with a long rebound from a set piece.
Dortmund was clearly the superior team, and Mainz goalkeeper Heinz Muller was forced into action in the 20th minute, stretching to his left to divert Shinji Kagawa’s effort around the post. However, Klopp’s men shot themselves in the foot ten minutes before the interval with a terrible piece of defending.
Lukasz Piszczek hit a suicidal back pass into the path of Muller, who got past the static Neven Subotic and took advantage of a miscue between Roman Weidenfeller and Mats Hummels to hammer his side into the lead.
Dortmund continuing to create chances after halftime. Peresic and Mario Goetze went close, before Muller produced another admirable save to deny Kagawa again from long range. The equalizer eventually arrived in the 64th minute, Perisic making the most of Lewandowski’s cushioned pass to level the scores.
The match was on a knife edge as the second half wore on, but the pace of the game slowed somewhat following the equalizing goal. However, with seven minutes remaining, substitute Anthony Ujah was put clean through on goal, only to be halted in his tracks by a brilliant last-ditch tackle by Hummels. Mainz countered moments later, and Andreas Ivanschitz had his shot blocked by Wiedenfeller.
But with the match about to end all square, Piszczek made amends for his earlier error when he fired in the winner with a low shot from the top of the box following a Perisic free-kick. Mainz barely had time to restart the match before the referee blew the whistle to signal an incredible comeback for the defending champions.