Edin Terzic was concerned after an injury to Mateu Morey marred Borussia Dortmund's 5-0 win over Holstein Kiel.
But his delight was marred by the sight of right-back Mateu Morey sustaining an injury in the 75th minute.
"Of course we're happy about the result. And it was a perfect evening until the 75th minute. But the injury to Mateu Morey leaves a cloud over everything," said Terzic after the final whistle.
"Knowing what a fantastic boy he is, it hurts all the more. He's on his way to hospital. We hope to know a bit more tomorrow."