Dortmund's Piszczek explains what went wrong against Union Berlin | OneFootball

Łukasz Piszczek believes a lack of concentration cost Borussia Dortmund in their defeat at Union Berlin last time out.

Lucien Favre’s side were beaten 3-1 at the Stadion An der Alten Försterei before the international break – a result which means they’ve already conceded five times in their first three matches.

And Piszczek has explained where it all it went wrong.

“We knew that Union would give it 100 percent,” the Poland international told the Bundesliga’s official website.

“I think in the second half we were missing some concentration. In the first half we were OK. Yes, we went behind but then got the equaliser fairly soon after that.

“But then we didn’t take the chances we created… two-on-two or three-on-two situations which we didn’t finish off.

“In the second half we conceded a goal from a mistake, which can happen in football, and which happened because we didn’t get back well enough.”

Dortmund host a Bayer Leverkusen side who have been tipped to potentially mount a Bundesliga title challenge on Saturday, and Piszczek is expecting another tough test.

“I think since Peter Bosz came in they have done very well,” he said.

“They’ve been even more aggressive and more offensive. We know that it’ll be a tough game for us.

“I don’t like talking about other teams and what they want to achieve. We know what we want to achieve and if we want to reach our goals this season, we have to win games like these.

“Last time we didn’t manage that away from home [in the 3-1 loss against Union Berlin].

“That showed that when you don’t have the right mindset, you won’t win anything when you perform like that.

“The first half against Union was OK, but the second wasn’t unfortunately.”