Originally Posted by The Pencil Neck
It all depends on the TE. If the TE is on the right, the Sam will be on the right and the Will on the left; if the TE is on the left, the Sam will be on the left and the Will on the right.
Don't need and probably shouldn't use "right" or "left" in the explanation because it can be confusing when people ask what side of los you mean ? Just say that the SAM is over or across from the TE and the WIL is on the other end. But obviously that's a simple offensive formation, because so many teams (like the Texans) run multiple TE sets these days. Then there's the "MIKE" which is the middle LB and implies that the these 3 acronyms were meant for the 4-3 and not 3-4, strictly speaking.