It’s Bracket Builder week at ESPN, meaning teams are putting final touches on their tourney résumés, while Joe Lunardi is locked in a dungeon somewhere, trying to make sense of it all. Well, we here at GK Central are nothing if not helpful, so we’re offering Joe -- and you, dear readers -- our own take on the bubble.

What if we were to ditch comparative tools like quality road wins or schedule strength and focus, instead, on one simple idea: Which teams have the best chance at upsetting a high seed? That’s what our model is for, and we set it loose on Lunardi’s bubble teams. Below, we’ve rearranged his 16 teams on the fringe of the tourney, sorting them into his typical categories (from “Last Four Byes” to “Next Four Out”) by virtue of our model’s Giant Killer rating. It certainly leads to a different look -- and a more entertaining opening round.

Last Four Byes

BYU Cougars (23.5 Giant Killer Rating on a 100-point scale.)

The Cougars dug themselves a serious hole early in conference play, and if they don’t make the tourney, they can blame it on Pepperdine, which swept their season series. But if you like upsets, you should root for BYU to find its way into the bracket, because the Cougars are dangerous.