Years from now, when the Warriors float back to earth (it will happen eventually), basketball historians will talk about the power of Oracle Arena in the heyday. The Portland Trail Blazers outplayed the Warriors for three quarters in Game 2 of their Western Conference semifinal series. Klay Thompson led the Warriors with 27 points, including three massive three-point shots down the stretch. Draymond Green added 17 points, 14 rebounds and seven assists. The Warriors are now 92-6 (including the postseason) there since Steve Kerr took over as head coach at the start of season. [...] their late surge Tuesday night, the Warriors were in trouble. Nearly every time they threatened, and stirred the crowd into a frenzy, the Blazers quickly and emphatically responded. Lillard made the free throw and Maurice Harkless soon sank a three-pointer to restore the lead to 63-56. Soon thereafter, when the Warriors again cut Portland's advantage to three, Lillard again responded with a dagger of a three-pointer. [...] as the quarter drew to a close with the Warriors trailing by eight, Leandro Barbosa missed a difficult fast-break layup. The Blazers made a couple sleek passes to find Lillard on the...