What Every NFL Spread Number Tells You
When you see Kansas City -6.5 vs. Las Vegas +6.5, the minus sign shows the favorite and the plus shows the underdog. Kansas City has to win by 7 or more to cover; Las Vegas covers if they lose by 6 or fewer — or win outright. The half-point is intentional. It eliminates the push, so one side always covers. Oddsmakers set
the number to split action evenly, not to predict the exact margin. Line movement — the spread shifting from -6.5 to -7.5 before kickoff — signals where sharp money or injury news is landing. Tracking that movement is how serious bettors add context to their decisions.