MANILA, Philippines — Cignal turned back a young but gritty VNS squad, 25-23, 25-15, 27-29, 25-14, to kick off its title defense in the Spikers’ Turf Invitational Conference on Monday at FilOil EcoOil Centre in San Juan City. Wendel Miguel led the collective effort of Cignal with 17 points off 14 kills and three aces