SaturdayBayern     vs     Hertha    3:30pmSchalke 04    vs     DortmundLeverkusen     vs     AugsburgHanover 96     vs     HoffenheimMainz     vs     BraunschweigWolfsburg     vs     Bremen    6:30pmSundayFreiburg     vs     Hamburg    4:30pmM’gladbach     vs     Frankfurt    6:30pmBERLIN.  Fresh from beating Arsenal away in the Champions League in midweek, Borussia Dortmund will be looking for a measure of revenge when they make the shorter trip to face Schalke in the Ruhr derby on Saturday.Dortmund earned widespread praise last season as they made it to the Champions League final, but their fans will not forget the fact that they lost both meetings with their neighbours from 30 kilometres along the road.A victory at the Veltins Arena would therefore allow Jurgen Klopp’s side to get one over on the Royal Blues as well as keep the pressure on Bayern Munich, the leaders who come into the weekend a point clear of Dortmund and Bayer Leverkusen.While Dortmund were beating Arsenal 2-1 in London, Schalke were also in Champions League action on Tuesday, although they were outclassed 3-0 at home by Chelsea.Jens Keller’s men have only lost once in their last six Bundesliga outings, with that a 4-0 home hammering by Bayern, but they have beaten Leverkusen at home this season and will be determined to repeat their 2-1 derby triumph of March, when Klaas-Jan Huntelaar scored the decisive goal in a 2-1 victory."That was the shadow that lay over last season for us and we need to make amends,” said Klopp.