I got it....
Fly into Seattle on a Thurs. Spend a day in the city - you can catch public transport from Sea-Tac to downtown Seattle.
Take the Amtrak train down to Portland, Or on Friday and explore the Rose City. Happy to show you around. Few of us FBGs here.
Saturday morning, take the bus down to Eugene for an afternoon game. I have season tickets - 5th row, corner endzone. Autzen stadium is magical. Depending on who they play, I'll gift them to you.
After the game, take a train or bus from Eugene back to Seattle for an NFL game Sunday afternoon.
Ideally you do this in late Sept or Oct. Oct is gorgeous up here, especially when the leaves begin to change. Plus, students are back to school in late Sept and you'll want the student section rocking for a Ducks game.
If you need to stash bags in Eugene for the game, I've got 2 sons down there with their own places by the school so we can help you there.
See you soon?