PETRON recovered from a slow start to beat Cignal, 19-25, 25-22, 25-21, 25-21, on Tuesday in the 2016 PLDT Home Ultera Philippine Superliga Invitational Conference at The Arena in San Juan.
Aiza Maizo-Pontillas had 18 points, with 15 kills, Mina Aganon scored 11 and Maica Morada added 10 for Petron, which remained a force without Rachel Anne Daquis, Aby Marano and Dindin Manabat.
"I told them na adjustment lang muna tayo sa first set," said Petron coach George Pascua, whose wards opened the match with numerous errors before making some key adjustments in the second and third sets.
"That's why in the second and third sets, medyo ibinuhos na namin. I told them na umpisahan natin ito ng maganda at tapusin din natin ng maganda. Dun na gumana ang depensa namin at sumunod na ang pagkonekta ng mga atake namin."
The HD Spikers did well in the third set, with College of Saint Benilde star Janine Navarro knotting the score at 20, but they fell into a maze of errors before Morada scored an ace and Maizo-Pontillas scoring on a kill to give control back to Petron.
"Aiza provides veteran leadership on the floor," said Pascua, adding that it is a homecoming of sorts for Maizo-Pontillas who was part of Petron's original squad.
"She is a silent killer, our equalizer. Kapag ginusto nya nagagawa nya talaga."
Navarro tallied 16 points while her College of Saint Benilde teammate Jeanette Panaga had 11 markers for the HD Spikers.