Mathematically, 0% of entries in Yahoo Sport's Men's Bracket Mayhem remain perfect. In numerical terms, 30 perfect brackets left after the completion of the first round. That's 32 out of 32 games picked correctly.

After an exciting first day of the NCAA men's basketball tournament, college hoops fans now have another thrilling slate of hoops to look forward to. Following a day filled with some major upsets and a viral team manager from McNeese,

Here's a look at how the NCAA Tournament bracket projects as men's college basketball heads into championship week. Who's in, out and on the bubble?