PETRON completed a three-match sweep of the first round with a 25-17, 25-18, 25-13 victory over Marinerang Pilipina in the Philippine Superliga Invitational on Tuesday at the Sta. Rosa Multi-purpose Sports Complex in Laguna.
The Blaze Spikers improved to 3-0 in Pool B and will join Cignal, which also went unbeaten in the first round, along with PLDT and winless Marinerang Pilipina in Pool C.
Sisi Rondina scored 18 points, Chinchin Basas, Remy Palma and Chloe Cortez scored seven each, while Aiza Maizo Pontillas added five markers.
The second round of eliminations starts next week as the Super Liga gives way to the second leg of the Asean Grand Prix from Friday to Saturday also in Sta. Rosa.
Nobody scored in double figures for the Lady Skippers with Caitlyn Viray finishing with seven markers.
Marinerang Pilipinas have lost 18 straight outings including matches in the All-Filipino Conference.