STANFORD (AP) — Tyler Gaffney ran for 157 yards and No. 6 Stanford hammered No. 2 Oregon for three quarters, then held off a furious rally by the Ducks to crush their national title hopes for a second straight season, this time with a 26-20 victory Thursday night.Kevin Hogan ran for a touchdown and played a mistake-free game for Stanford (8-1, 6-1 Pac-12).