Saarbrucken bring on their assist king Kianz Froese.

Tobias Janicke is off.

Leverkusen make two changes at half-time. Jonathan Tah and Karim Bellarabi - both senior Germany internationals - are on.

The players are back out for the second half. Are the Saarbrucken players 45 minutes away from their season ending?

Saarbrucken only had 16% of the ball in that first half - and one shot to Leverkusen's 15.

I'd like to see Saarbrucken take a risk and make some attacking changes at the break. They've got nothing to lose.

Gillian Jurcher is the joint second top goalscorer in this season's German Cup with three goals.

And Kianz Froese has assisted four goals in the run - a record for a non Bundesliga player in a German Cup season.

Get them on.

It's a case of so far so good for Bayer Leverkusen, who are in control. But at the same time, they are not out of sight if Saarbrucken come out with a better second-half performance.

There is no injury time as the referee blows the half-time whistle.

Saarbrucken are basically playing a 5-5-0 with five defensive midfielders when they don't have the ball.

Daniel Batz punches when he probably could have caught but it does the job.

Corner to Leverkusen.

I feel like the referee is giving the home players a bit of leeway here.

Tobias Janicke escapes without a booking for a worse foul than the early Leverkusen yellow.

Paulinho is in again but Daniel Batz saves with his feet.

This is only Lukas Kwasnioki's sixth match in charge of Saarbrucken. They sacked Dirk Lottner in December after losing two league games.

It's nearly game over (again) as teenager Paulinho chases onto a through-ball and clips the ball over the keeper but it drops inches wide of the far post.

Florian Wirtz crosses for Moussa Diaby, whose header is straight at Daniel Batz. Can Saarbrucken just make it to the break with a glimmer of hope? Still 10 minutes to go.

Quick Leverkusen attack as Moussa Diaby finds Paulinho (not that Paulinho) but the Brazilian's shot is held by Daniel Batz.

Another Leverkusen attack and this time Kerem Demirbay heads wide before getting into an argument with a Saarbrucken defender.

Headed away.

A corner to Leverkusen now. Kerem Demirbay to take.

A total miscommunication between two Saarbrucken defenders almost lets Moussa Diaby in but they eventually deal with it. They haven't even been able to play a friendly in the past three months - just 11 v 11 matches in training.