Get tickets and join the fans at a game at PK Park. If there's nothing on while you're in the area, you might like to check if they give a guided tour of the grounds.
Pay the entrance fee for PK Park and explore to your heart's content. You'll find this sporting facility in the riverside neighborhood of Harlow. When you're done there, this part of town has plenty more to offer — Autzen Stadium, McArthur Court and The Shoppes at Gateway are also worth checking out.