When making tough decisions in daily fantasy football, Vegas lines can be predictive of fantasy scoring, while providing an edge on the competition.
Unfortunately, as professional NFL handicapper Warren Sharp has pointed out, oddsmakers' primary goal is not to set the most accurate lines; their goal is to make money, and they do that by encouraging public action on a particular side. What does that mean?
Let's say a sportsbook opens the line on a game with Team X favored to beat Team Y by seven points. If 80% of the public money coming in is in favor of Team X against the spread but the book still does not adjust the line, that demonstrates that either there is sharp money on Team Y, or that they feel confident about Team Y against the spread.