PETRO GAZZ battled from 0-4 down in the fifth set and endured a couple of momentum-halting lulls to carve out a 20-25, 25-22, 25-12, 33-35, 15-9 victory over F2 Logistics in a key Premier Volleyball League Invitational Conference eliminations match at the PhilSports Arena in Pasig City on Thursday. Chery…