nortex97 said:
Proposition Joe said:
Sportsbooks don't adjust lines to try and get even money.
Not sure if serious. The line moves 100 percent as a consequence of where folks are placing wagers (and events, like injuries, akin to something in politics like Kamala talking off script in an interview). This isn't a real big mystery:
Except that's not how it works in the real world. It's the economy equivalent of thinking if you don't buy gas on Monday the prices will have to come down.
Most Vegas lines move off of an odds screen (eg. Don Best back in the day, but nowadays there's a variety of them). You walking up and putting $1000 down or $10000 down isn't going to move a line significantly, because sportsbooks above all else do not want to have a rogue/bad line -- because that is when a sharp/whale can actually impact your bottom line.
Think about it - you think all the sportsbooks you see at 6/6.5 on a given week are all getting even action right at that number?
Books take a side on just about every game outside the major events that have enough volume to really hurt them (Super Bowl, college title game to an extent, a few others). Otherwise they just make sure their number doesn't expose them to too much action. No real need to balance books when the majority of people laying down money don't understand the game they are playing and definitely don't understand any kind of real money management.
Anyone who has ever laid a sports wager down that doesn't know the value of a half point in that sport, or what the implied probability of say a shift from 4.5 -> 5 represents -- meaning roughly 95% of the people who lay sports wagers down -- is playing a game they don't even understand.
That is why all those beautiful casinos exist.
As for the odds predicting outcomes -- it's been a minute since I've pulled the numbers, but the average closing line of a football game is something like
two touchdowns off of the actual result.
Sports spreads aren't accurate, they are just a lot more accurate than most people.