Borussia Dortmund coach Jurgen Klopp says he is more upset by their latest injuries than the defeat by Bayer Leverkusen that left them 10 points behind Bundesliga leaders Bayern Munich.
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Midfielders Sven Bender and Nuri Sahin suffered knocks in Saturday's 1-0 loss to second-placed Leverkusen, who are now six points ahead of them.
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Another midfielder, Ilkay Gundogan, and defenders Mats Hummels, Neven Subotic and Marcel Schmelzer are already sidelined.
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"We lost 1-0, but that's actually the least of our problems today," said Klopp.
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"If you want to beat Leverkusen, you need to be really good - and we weren't really good."
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Striker Robert Lewandowski said: "We didn't play well and deserved to lose. We are currently in a very difficult situation.
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"A lot of players are injured, and another two have been added to that list today. But we must not bury our heads in the sand and forget about the defeat.
I just pity Dortmund this season because i see more defeats in subsequent games
Klopp is very right on this one because injury problems can ruin a football club. He has to be lucky