ANTIPOLO—Not only did TNT show off its defensive prowess against Ginebra in Game 1 of the PBA Governors’ Cup Finals, but the Tropang Giga also flaunted its late-game composure for a headstart in their best-of-seven title series. Poy Erram and Jayson Castro exhibited their veteran guts to perfection in the 104-88 blowout, much to the