The SI.com Bracket Watch Committee would like to use this still-early part of the season to get everyone on the same page regarding a handful of key bracketing principles. Last week, we touched on one of the well-known ones that states two teams from the same conference cannot play any earlier than the Sweet 16, and possibly not before the Elite Eight, depending on how many times the two teams in question saw one another in the regular season. To kick off this week of the Bracket Watch, we’re going to highlight another principle that will almost certainly come into play this season, thanks to the ACC.