Valentin Stocker scored with four minutes remaining to hand Basel a shock one nil win over Bavarian giants Bayern Munich in the first leg of their champions last 16 tie.
The 22-year-old Swiss International giving the Swiss Super league champions a slight advantage heading into the return leg next month.
Elsewhere on Wednesday night André Ayew sent the Stade Velodrome into wild celebrations after his stoppage time goal gave Marseille a one nil win over three-times European champions Inter.
The decisive second legs take place on March 13 in Milan and Munich.
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