Budding Ghanaian forward Bernard Tekpetey scored in extra-time as Altach beat Union Gurten 4-3 to advance in the Austrian Cup on Wednesday.
The 19-year-old was handed a starting role and slotted home in the 104th minute to give Altach a 4-2 lead.
But Ivan Grabovac pulled one back three minutes later Gurten.
The Ghana International scored last week in the league match when he came off the bench in a 2 - 2 draw with Rapid Wien.
His performance has seen him gain more play time following his loan move from Bundesliga side Schalke O4.