MANILA, Philippines–Magnolia came back from 26 points down to stun defending champion Barangay Ginebra, 93-91, in the PBA Commissioner’s Cup Sunday night at Smart Araneta Coliseum. The Hotshots turned in a cutthroat second half to overhaul what seemed an insurmountable deficit and ultimately extend the club’s unbeaten start to four games. “Talk about effort. At