Could do little about Hertha's two goals in the first half as he was let down by a makeshift defence in front of him.
Did not enjoy playing against Allagui on the left-hand side as the midfielder tricked his way into dangerous areas.
Wasted a string of chances to score at set pieces and was not much better at the other end as Ramos and Allagui linked well for the visitors.
Had some calamitous moments on his second Bundesliga start, most notably when he was dispossessed by Allagui when the Tunisian made it 2-1. Hauled off at the break.
The Armenian midfielder showed some classy touches at times, but all too often his final pass was awry.
Showed his versatility by moving from left-back to centre-back following Sarr's withdrawal. Headed over late on when presented with a fine chance to draw his team level.
His 91st minute booking capped off a disappointing display in central midfield which was littered with fouls and poor passes.
Produced a very timid display before being replaced by Hofmann shortly into the second half.
Grabbed the assist for Reus' goal with a well-weighted pass but faded in the second half and was one of those sacrificed as Dortmund went in search of a late equaliser.
Put the home side ahead with a calm finish after a mistake from Gersbeck early on, but had little influence on the game after that.
Showed an unusual lack of composure at times when given a sniff at goal by Hertha's alert defence, particularly on one occasion in the first half when he blasted high and wide.
The 18-year-old debutant was fantastic for the visitors after gifting Dortmund their opener. Kept the hosts at bay with a string of fine stops.
His age got the better of him a couple of times as he mistimed some tackles on Lewandowski and Mkhitaryan, but on the whole he was solid at the back.
Showed no intention of shying away from any physical encounters as he harried Dortmund's off-form attackers.
Kept Hertha ticking in midfield with some neat and tidy passing to his more attack-minded teammates.
Had the measure of Lewandowski as the Poland international had a very quiet game upfront for Jurgen Klopp's side.
The Japan international looked relaxed in central midfield up against Sahin and Kehl, and he impressed alongside Cigerci.
The Norwegian midfielder showed craft and vision to pick out Allagui again and again on the right-hand side despite Dortmund's attempts to nullify his threat.
Got forward when possible down the left in the first half and defended stoutly after the break as Dortmund threw men forward.
Produced an all-action display in midfield as he limited Sahin's influence on the game. Was crucial as his side held out for all three points.
Notched his 11th league goal of the season to make it 1-1 with a well-taken near-post finish and linked well with Allagui throughout.
The tricky Tunisian was outstanding for the away side, playing just behind Ramos. Caused Dortmund's makeshift defence all sorts of trouble and showed great composure to make it 2-1.