Okwahu united progressed to the semi-final of the MTN FA Cup following 1-0 after extra time win over ten-man WAFA in Nkawkaw on Sunday.
Kwame Kyere Addo scored in the 115th minute to help Okwahu register the famous victory over the Premier League outfit.
The game was highly contested with both sides giving a good account of themselves.
West African Football Academy finished the match with ten men after defender Abubakari Ibrahim was sent off for a second yellow card offence.
Okwahu United will face Liberty Professionals in the semi-final next month in Kumasi.