What Actually Moves a Basketball Betting Line
A point spread opens based on the sportsbook's model, then the market takes over. Heavy public money on one side nudges the number a half-point or more to balance exposure. Sharp bettors — those with a documented history of winning — can swing a line two or three points on their own. Injury news moves lines the fastest: a star player ruled
out in the afternoon can flip a four-point favorite into a two-point underdog before you refresh the page. Tracking where a line started against where it sits at game time tells you exactly who has been betting and how the book is responding.