The March Madness tornado is knocking on our doorstep, so best study up all you need to know before this weekend's selection Sunday. Plus more sports news and entertainment, after the jump:

20 Little Kids Who Are More Athletic Than You, via Bleacher Report

The Best of March Madness Sports Books, via Busted Coverage

Tom Crean Goes 'Harbuagh' in Altercation with UM Assistant, via Guyism

Picking the Winning Bracket, via RSVLTS

Katy Perry Makes the NHL More Exciting, via With Leather