AACHEN, March 17 (Bundesliga) - Ernst Middendorp's Bundesliga coaching return ended in defeat as Alemannia Aachen clinched a precious victory over Arminia Bielefeld.
Jan Schlaudraff struck in the 71st and Laurentiu Reghecampf netted a penalty five minutes later to put the issue beyond doubt.
Alemannia had the first chance of the match in the fourth after Mathias Hain misjudged a cross.
Markus Bollmann came to the rescue and cleared the ball before it could cross the goalline.
Middendorp almost grabbed a dream start in the eighth when Heiko Westermann got on the end of a pinpoint cross from Jonas Kamper but he found only Stephan Straub with his header from six yards out.
Aachen took over in the following as Reghecampf had a goal disallowed in the 27th minute.
Referee Herbert Fandel ruled he had used his hand during a nice run into the box.
Two minutes later, Sascha Rosler rounded Hain but opted to put the ball back rather than hit the empty net where it was cleared by the joint efforts of a confused defence.
Bielefeld's Jorg Bohme then helped turning the tide again with a crisp 30-yard free-kick that missed inches to the left.
Rosler hit the crossbar with a header shortly after the break before Bohme wasted Arminia's best chance in the 53rd minute when he his shot from a sharp left angle arrowed past friend and foe and the right post.
Hain stood tall against Schlaudraff in the 62nd minute but was beaten in the 71st when the Germany international netted for the lead after a Reghecampf free-kick from the left.
Marcio Borges then brought him down in the box for Reghecampf to calmly fire the ball past Hain from the spot.
Arminia had a chance through substitute Thorben Marx but his long-distance blast was an easy target for Straub.