Napsa had Chitoshi Mukuma to thank for the all important goal that gave the Lusaka side a 1-0 win at Nkoloma Stadium.
The Tenant Chilumba coach Napsa have now widened their lead to eight points after tallying 34 points at the half mark of the season.
Power Dynamos 3-1 Lumwana Radiants
Mufulira Wanderers 1-1 Nchanga Rangers
Konkola Blades 3-0 Nakambala Leopards
Buildcon 2-0 City of Lusaka
Green Eagles 2-0 Nkana