Many observers expect the Oregon offense to evolve a little this season. It has to. The spread and up-tempo is no longer the mystery it was when the Ducks went to the Rose Bowl and the BCS National Championship Game. Teams see it week after week and many practice against it every day now. There will likely be some subtle changes and shifts in emphasis. It will be interesting. Exciting offense has become a trademark, and this is a team that’s loaded at tailback, deep on the offensive line, gifted at qb, and green at wide receiver. The South Dakota game won’t reveal much, but they’d better have a cohesive plan for Michigan State. The Spartans are one of the most hard-hitting and disciplined defenses in the country, although they had some considerable losses to graduation, particularly in the defensive backfield and on the defensive line.