'A brilliant move' - Borussia Dortmund players reveal how Niko Kovac's shock tactical masterstroke stunned Bayern Munich

Borussia Dortmund manager Niko Kovac produced a major tactical surprise during the recent Der Klassiker, moving away from his established defensive system to frustrate Bayern Munich. The bold decision to revert to a back four earned significant praise from senior members of the Dortmund squad following the hard-fought draw.