How can point spreads and over and unders be so close all the time within half point.?

Question

one team dominates one half the other team the next half and comes with half point of point spread almost all the time. this does not happen in olympics. hmmm i wounder why?

Answer 1

You've obviously never bet on the Olympics. It happens all the time there too. The odds are stacked against you when you are betting. If they weren't then nobody would take your bet.