Egyptian giants Zamalek stunned hosts Enyimba 1-0 in a CAF Champions League match played at the Adokiye Amiesimaka Stadium in Port Harcourt.
Bassem Morsy headed Zamalek in front in the seventh minute of the Group B encounter.
Mamelodi Sundowns of South Africa now top of the group with three points following their 2-0 win at Algeria’s Entente Setif on Saturday.
Enyimba will now seek a win at Sundowns on June 29.