How the NBA Point Spread Actually Works
A point spread does one job: it creates two sides of roughly equal appeal. If the Celtics are -7.5 against the Pistons, Boston must win by 8 or more for a spread bet on them to cash. Back Detroit at +7.5 and they can lose by 7 and you still cover. The half-point eliminates the push entirely, which matters late when a
game lands right on a round number. Lines open Sunday night, shift as sharp money and injury news hit, and can move two or three points by tip-off. Watching that movement tells you where the weight of money is going and why. Access depends on your state and where local law permits.