SUTHERLIN " A dream postseason run for the Sutherlin High football team turned into a nightmare for the Bulldogs, thanks to the Ontario Tigers on Saturday afternoon.No. 2-ranked Ontario controlled Sutherlin's ball-control offense, then took control of the game in the second half largely in part to a big game from senior tailback Loren Stewart. The result was a 55-7 Class 4A state quarterfinal victory for the unbeaten Tigers that brought the Bulldogs' stellar playoff drive to a screeching halt."We knew coming into the game that they're a very strong football team," Sutherlin coach Josh Gary said. "I expected to …