The Ducks close out the regular season with another rivalry tilt against the Beavers. Oregon heads to Corvallis this week for a big matchup against the Oregon State Beavers in a rivalry showdown. The Ducks still have a shot at the Pac-12 title and to get there they need to win on Saturday. As always our group of writers got together to give our score predictions. Graham Metzker Prediction: Oregon 31 Oregon State 24 The Platypus Cup, or whatever moniker you prefer these days, is up for grabs in Corvallis this weekend. And there’s a whole lot on the line…