Bayern Munich and Borussia Dortmund both rested a host of first-team players ahead of next week's UEFA Champions League semi-final, second legs, but still claimed Bundesliga victories.
Champion Bayern won 1-0 at home to Freiburg thanks to Xherdan Shaqiri's 35th-minute effort.
The Bavarian side rested the likes of
Freiburg's defeat denied it the chance to move about Schalke, which plays on Sunday afternoon (Monday morning AEST), and into fourth place.
Borussia Dortmund left, among others, midweek's four-goal hero
Aussie goalkeeper Mitch Langerak produced a string of saves to secure the points for Dortmund while Socceroos attacker Robbie Kruse played the full 90 minutes for relegation threatened Dusseldorf.
Defeat plunged Fortuna back into relegation trouble as the two sides below it both picked up important wins.
Third-bottom Augsburg, in the relegation play-off place, moved level on points with Fortuna thanks to a 3-0 win at home to Stuttgart.
Sascha Molders broke the deadlock in the 61st minute before late strikes from
Second-bottom Hoffenheim went to within three points of safety with three games to go with a 2-1 win at home to Nurnberg.
Two goals in the opening 19 minutes from
Elsewhere, third-placed Bayer Leverkusen won 1-0 at home to Werder Bremen thanks to
Wolfsburg beat Borussia Monchengladbach 3-1, Diego scoring one and setting up the other two.
Schalke's boycott of German television channel ZDF at the weekend is likely to be only an isolated case, according to club president Clemens Tonnies.