Madness officially begins March 16 with Selection Sunday, where the road to glory for 68 men's college basketball teams begins.

Here are 12 numbers you should know before filling out your bracket — including one that will sting for Philly hoops fans. Subscribe now to unlock nonstop Philly sports coverage, including new story formats tailored to every fan, behind-the-scenes access, and the latest on all your favorite teams.

Seeds? Sweet Sixteen? Cinderellas? What is a bracket buster, anyway? A look at March Madness for people who don't follow basketball.