Athletic Bilbao B recorded a 3-0 heavy home victory over Barakaldo in their match-week 9 clash at the Instalaciones de Lezama Stadium.
Goals from Oier Zarraga and Aitor Paredes on the 17th and 74th minute respectively handed the home side a 2-0 lead.
Williams sealed their home victory with a brilliant finish on the 81st minute of the game.
The 18-year-old enjoyed the entire duration of the match with a stupendous performance.
He has scored two goals and provided four assists in his 8 appearaces for Athletic Bilbao B this season so far.
Williams is the young brother of Inaki Williams who has been chased by the Ghana Football Association with hopes of switching his allegiance to represent Ghana at the senior level.
Both are eligible to represent the West African nation following their Ghanaian roots.