Alyson Footer's new blog post discusses the chances of who will be 1B1 come Opening Day.
Right now, around 10 days before the first Spring Training game, the odds are overwhelmingly in Wallace's favor.
Lee is a backup plan in case Wallace really, really, really scuffles this spring (yes, it deserves three reallys, to illustrate just how disastrous of a showing Wallace is going to have in order to not be the Opening Day first baseman.)