Borussia Dortmund winger Karim Adeyemi has picked Barcelona’s Ronald Araujo as his toughest-ever opponent. Adeyemi has become a key player for Dortmund in recent months. He came up against Araujo in a club friendly in August 2021. When asked about his toughest opponent, Adeyemi recently said (via BarcaTimes): “The best player I ever played against? Ronald Araujo.” Araujo is widely regarded as one of the best central defenders in Europe at the moment. The Uruguay international has been a key player for Barcelona so far this season. Karim Adeyemi picks toughest player he ever played against