Michigan vs. Villanova: Keys to the NCAA Final

Villanova's Omari Spellman, left, blocks a shot by Kansas's Sviatoslav Mykhailiuk during the second half of a Final Four game on Saturday. (AP Photo/Chris Steppig, NCAA Photos Pool)

SAN ANTONIO — A national championship game is typically no place for a David-vs.-Goliath story. The last two teams standing are usually among the very best and, roughly, equals.