Wydad Athletic Club of Casablanca lost their first game of the season after suffering a 1-0 loss against Hearts of Oak at the Accra sports stadium on Sunday.
Isaac Mensah connected home a Salifu Ibrahim cross in the 41st minute as the Phobians held on to win the game against the champions of Morocco.
It is the first time WAC has been defeated across all competitions this season after winning four matches and drawing one game for the first five games of the Morocco league season.
WAC came to Accra without their head coach Walid Regragui who tested positive to Covid-19 and the team returns to the North African country with the intention of trying to overturn the tide when the Phobians arrive for the reverse encounter in a week later.