Christian Pulisic (Dortmund) receives a brilliant pass and wastes a big opportunity as his shot from inside the penalty area flies narrowly wide of the left post.
Hertha Berlin take the corner, but their hopes of scoring a goal end with a nice clearance by the defence.
The ball unexpectedly rebounds out to Maximilian Mittelstadt (Hertha Berlin) on the edge of the box, but his attempt is lame and ends up well wide of the right post.
The resulting corner comes to nothing as Ondrej Duda (Hertha Berlin) sends it out of play.
The corner from Ondrej Duda (Hertha Berlin) is intercepted by the defence.
Nothing comes of the resulting corner from Christian Pulisic (Dortmund). The defence is alert and manages to cut it out.
Christian Pulisic (Dortmund) gets on the end of a pass on the edge of the box but his shot is blocked. The linesman points to the corner flag, Dortmund are going to take it.
A great pass puts Marko Grujic (Hertha Berlin) clear inside the box, he sidesteps the keeper but inexplicably hits his shot against the right post.
Jacob Bruun Larsen (Dortmund) receives a diagonal pass, bursts into the box and shoots towards the bottom left corner. Rune Jarstein is well positioned, though, and it's a comfortable save.
Niklas Stark (Hertha Berlin) makes it easy for the referee to show him a yellow card.
Hertha Berlin quickly take a corner kick with a short pass.
Maximilian Mittelstadt (Hertha Berlin) tries to send a low pass into the box, but it's blocked and cleared. Hertha Berlin earn a corner.
The resulting set piece from Dortmund is comfortably intercepted by one of the defending players.
Wow, what an escape. Jadon Sancho (Dortmund) has an effort from inside the box but it's brilliantly blocked. Dortmund have been awarded a corner kick.
A perfectly taken corner kick. Dan-Axel Zagadou (Dortmund) gets on the end of it and produces a fantastic bullet header from around the penalty spot which goes inside the right post, increasing the score of today's match – 2:2.
Dortmund win a corner.
The second half gets underway.
Tobias Welz has ended the first half by blowing the whistle.
Jadon Sancho (Dortmund) bursts into the box after a fine solo run. He looks up and tries to place a shot inside the right post, but Rune Jarstein makes a great save to deny him his moment of glory.
Jadon Sancho (Dortmund) whips in a cross from the corner, but Rune Jarstein is well positioned and punches the ball away.
Goal! Salomon Kalou (Hertha Berlin) wins the battle of wills and sends an unstoppable penalty past Roman Burki into left side of the goal.
Salomon Kalou (Hertha Berlin) is heading towards the penalty spot to take it.
Julian Weigl (Dortmund) touches the ball with his hand. Hertha Berlin are awarded a penalty kick!
Manuel Akanji (Dortmund) timed his run perfectly to connect with the resulting corner kick, but his finish from around the penalty spot was rather poor as it went way over the bar.
Dortmund have been awarded a corner kick.
Marco Reus (Dortmund) produces an inaccurate low pass into the box that is blocked by the one of the defenders. If this pass had slipped through, the ball would have probably ended up in the back of the net. The ball goes out of play. Dortmund are awarded a corner kick.
Jacob Bruun Larsen (Dortmund) connects with a pass but sees his shot from the edge of the box blocked.
The linesman raises his flag. Valentino Lazaro (Hertha Berlin) is adjudged offside.
Ondrej Duda (Hertha Berlin) makes a strong challenge and Tobias Welz blows for a foul.
Maximilian Mittelstadt (Hertha Berlin) tries to find the head of a teammate in the box but overhits the cross.
Dortmund didn't take advantage of the corner and score as the opposition's defence was alert and averted the threat.
Julian Weigl (Dortmund) latches on to a lovely pass inside the box and fires towards the right side of the net, but the effort is smothered by the keeper.
Dan-Axel Zagadou (Dortmund) has tested the patience of referee Tobias Welz and goes into the book for a previous late challenge.
Goal! Thomas Delaney (Dortmund) picks up the ball inside the box, finds himself in a good position and fires in a shot which is deflected past Rune Jarstein. He makes it 1:1.
Dortmund take a short corner kick.
Jacob Bruun Larsen (Dortmund) hits a shot towards the left side of the goal from the edge of the box, but it's a weak attempt and is easily saved by Rune Jarstein. The ball goes out of play and Dortmund have been awarded a corner kick.
Hertha Berlin hold possession of the ball and display neat passing from player to player. They are waiting for the right moment to open up the opposition's defence to hit them swiftly on the break.
Abdou Diallo (Dortmund) whips the ball in, but it fails to reach any of his teammates as the opposition's defence averts the threat.
A quickly taken corner by Dortmund.
Salomon Kalou (Hertha Berlin) pounces on a rebound inside the box from a Maximilian Mittelstadt shot and sends the ball into the back of the net. The score is 1:0.
Marko Grujic (Hertha Berlin) receives a low pass just outside the box and unleashes a fine strike towards the middle of the goal. Roman Burki pulls off a reflexive save to block his effort. Nice goalkeeping skill, indeed.
The first half has started.
The players are out at last! Hertha Berlin will take the kick-off.
Tobias Welz will supervise the game today.
Hello and welcome to our minute-by-minute commentary of the upcoming clash. We will try to provide you with as-accurate-as possible picture of the happenings on the pitch. Have fun.