Summary:
Borussia Dortmund's player-in-waiting injury is a 'tweak', according to the Bundesliga club's website.

Full article:
Borussia Dortmund midfielder Henrikh Mkhitaryan has been ruled out for six weeks with a muscle tear in his right thigh. The Armenian playmaker had to be taken off in the 35th minute during Saturday's 1-0 loss at Hertha Berlin, a defeat that leaves his side in the relegation zone with two games left before the winter break. Dortmund coach Jurgen Klopp said: 'He felt a tweak, which isn't good in a three-game week.' Henrikh Mkhitaryan is expected to be ruled out for the next six weeks with a thigh injury . The Armenian playmaker, pictured playing in the Champions League, was taken off in the 35th minute . Dortmund boss Jurgen Klopp will be disappointed with news of Mkhitaryan's injury . The club announced on their official website that a medical examination on Sunday morning confirmed the extent of the injury. Dortmund, the 2011 and 2012 champion, face tough games against Wolfsburg and Werder Bremen during the course of next week.