Darmstadt lived up to their reputation as one of the Bundesliga's best sides away from home as they frustrated 10-man Mainz to clinch another precious point in their battle to beat the drop with a goalless stalemate.Dirk Schuster's men are behind only Bayern Munich and Borussia Dortmund in terms of results away from home and they showed how difficult they are to break down with a solid defensive display.Pablo De Blasis missed Mainz' best chances, while Sandro Wagner had a rare sight of goal for Darmstadt, who were lent a hand by Mainz defender Giulio Donati when he earned a red card in the second half.The draw dents Mainz's hopes of qualifying for the Champions League next season, although they remain three-points clear of Wolfsburg in the race for Europa League football.Darmstadt pulled a further point ahead of the bottom three, with two points now separating them from the relegation play-off berth.