The Raiders public relations primed the fan base for a switch to the 3-4 defense with a story about the Raiders "evolving" defense and how the Raiders played the 3-4 during super bowl seasons. When it comes to switching from the 4-3 defense to the 3-4 defense, there is one major factor to consider: Are the players suited for the 3-4? This is where arguments can be made. The reality is the Raiders have tried just about everything to stop the run and still been unable to do so. It could be blamed on players, but most of the players in the front seven have turned over or changed positions from year to year. You can't really blame the coaches, they keep changing and the result remains the same. The only thing left to blame is the culure and the scheme. So the scheme is the next logical thing to change, as the owner doesn't see anything wrong with the culture he has created. It would be easy to think the Raiders' man-to-man defense would make for a poor secondary, but