The top match at Borussia Dortmund will be a new yardstick for RB Leipzig. After winning four Bundesliga games in a row, the Saxons face a difficult task this Saturday (3.30pm/Sky) after losing 6-0 at FC Bayern in the season opener. "Dortmund are very stable. We have to reach our maximum performance. That applies to all parameters, tactical, mental, playful. We have to be top in all areas, that's the bar we set," said RB head coach Ole Werner, who will be without Kevin Kampl, who is ill, and Timo Werner (muscular problems) in the squad.