Aarau, who had scored seven goals in winning their first three games, could not find a way past the Neuchatel Xamax defence and were forced to settle for a goalless draw.

They remained top, however, as second-placed Basle slipped to a 2-0 defeat at Sion. Beto opened the scoring after 37 minutes and Saidi Aladu Adeshina sealed the points on the stroke of half-time.