Dortmund - Reigning Bundesliga champions Borussia Dortmund will have to do without the services of central defender Mats Hummels for the coming weeks.

The Germany international suffered a torn ligament in his right ankle during the Revierderby defeat at Schalke on Saturday.

Up to four weeks

The 24-year-old has only missed two Bundesliga games all season, but according to Dortmund team doctor Dr. Markus Braun, will now be out for up to a month, putting his involvement in the UEFA Champions League quarter-finals at risk.