Borussia Dortmund coach Jurgen Klopp is confident that his side can win away to Arsenal on Wednesday night, after watching his team score a 1-0 victory at Bayern Munich on Saturday.
Dortmund's 1-0 triumph at the Allianz Arena brought them to within two points of the league leaders, giving Klopp a huge boost ahead of the Champions League visit to London.
"Practically nothing tops beating good teams," he told Sky television in Germany. "We managed that (on Saturday) and we can do that again on Wednesday.
"It will be a different challenge, but today was an important sign that we can also do this at Arsenal."
With two sets of games remaining, the Gunners lead Group F on eight points, with Marseille on seven, Dortmund on four and Olympiakos bottom with three points.
In September, Dortmund and Arsenal drew 1-1 in Germany during the opening round of group fixtures.