Let's hit the mailbag

Updated: March 16, 2010, 7:39 PM ET
By Jordan Brenner and Peter Keating

In case you missed it, we've posted detailed breakdowns of the first-round games with Giant Killer implications in all four regions, which include the probabilities of an upset occurring. Here's the East region, the South, the Midwest and the West. But with less than 44 hours remaining until the tourney tips off, we wanted to take the chance to address some of the questions we've been getting, through our mailbag and from the comments section of various articles and blog posts. Let's get to it, then.