David vs. Goliath
Great article by Malcolm Gladwell from the New Yorker: What do the biblical David, a girls basketball team, and terrorists have in common?
It brings up an excellent point, as far as the sport of basketball goes. Why don't all teams use the full court press? Why let your opponent get all the way to your end of the court before playing defense?
I've also never understood why hockey teams don't take advantage of line changes in hockey more. It seems that the moment your opponent's players are headed for the sidelines, that would be an excellent time to suddenly make a break for their goal. Yet teams seem to just wait until everybody's set again.
Can you imagine if football was played like this? Not playing defense until the 50 yard line?
Do any other sports have "loopholes" or overlooked strategies that would give underdog Davids an edge against Goliaths?