I always use one of the rosters they release before they start messing with ratings. They tend to get a little out of hand once they start tinkering with them. I've seen a player have a really good, or really bad month and get 6 or 7 points added or subtracted to their overall rating. Given I do think some guys got shafted on their ratings this season to begin with. Carlos Rodon for example fell from a 93 to a 77 after one bad year where he was hurt during the few starts that he did make. But to sum it up it really just depends if you want to start a franchise with default ratings or not.