In the first match, goals by Ilyad Scicluna and Alex Ellul gave the Zabbar side a 2-0 win over Zurrieq. On the other hand, Carlos Camenzuli and a brace by Emil Raducu gave the Saints a 3-0 win over Zebbug.
Birzebbuga move fourth, three points, behind leaders Zejtun. St. Patrick are now joint-fifth on six points.
On Sunday, Gzira United take on Senglea Athletic while Naxxar Lions face San Gwann.