• Robben scores on comeback from injury
• Werder concede two stoppage time goals to lose 2-1
• Schalke slump to fourth straight loss

Bayern are on 12 points with Cologne, in second place on 10 after beating Schalke 04 3-1. Schalke are in 17th place after their fourth loss in four Bundesliga matches, with coach Markus Weinzierl under mounting pressure.

Borussia Dortmund are third on nine after Tuesday's 5-1 demolition of VfL Wolfsburg.

Werder Bremen, who sacked coach Viktor Skripnik on Sunday after three straight losses, conceded two stoppage time goals to lose 2-1 against Mainz 05 on interim coach Alexander Nouri's debut on the bench and remain in last place.

Bayer Leverkusen missed yet another penalty, settling for a goalless draw against Augsburg to drop to 12th place on four points.