PULLMAN — Andrew Furney kicked a 27-yard field goal on Washington State’s first possession of overtime, and the Cougars overcame an 18-point deficit in the fourth quarter to stun rival Washington 31-28 in the Apple Cup on Friday, snapping an eight-game losing streak. Washington quarterback Keith Price threw an interception on the first play of overtime that defensive lineman Kalafitoni Pole nearly returned for a game-ending touchdown, but he was caught at the 5. The Cougars (3-9, 1-8 Pac-12) took possession and, after picking up a first down, Furney kicked a 27-yard field goal, leading to a crush of crimson and gray fans storming and celebrating at midfield. Washington (7-5, 5-4) had a chance to win on the final play of regulation, but Travis Coons’ 35-yard field goal attempt at the same end of the stadium was wide right after a bad snap. In a rivalry known for unpredictability, the 2012 version will rank among the tops in Apple Cup lore. Washington led 28-10 after Bishop Sankey’s second touchdown run late in the third quarter, but the Huskies wilted under a siege of self-inflicted mistakes with turnovers and penalties coming back in favor of the Cougars.