A move from −110 to −125 shifts the fair chance from 50.0% to 53.2%.
01 · Tickets and money
Tickets count bets, money counts dollars
Betting splits come in two numbers. Tickets is the share of bets on each side. Money is the share of dollars. A side can draw 70% of the tickets and only 45% of the money when many small bets go one way and a few large ones go the other.
Books move lines to manage risk and to follow information. Most small bettors are not the information. When a book moves a line away from the side most people are on, it is usually reacting to the money it respects more.
02 · What it is
Reverse line movement, step by step
- A side opens at a price, say −110 on each side.
- Most tickets arrive on one side, the popular team.
- The line moves the other way anyway: the unpopular side gets more expensive.
- That disagreement between the crowd and the number is the signal.
Methods agree: every method lands within one tick of −115 fair.
Side A’s fair chance, cut removed
- At the open
- 50.0%
- Now
- 53.2%
- The move
- +3.2 pts
The instrument above takes the cut out of the opening price and the price now and shows how far the fair chance moved. A move of a few points of fair chance is meaningful on a liquid market. A move of one point is often just the book tidying its margin.
03 · Where it misleads
Where reverse line movement misleads
- Splits are partial. Public split numbers come from a few books, not the whole market. The line reflects everyone.
- Injury and weather news move lines for reasons that have nothing to do with who bet.
- Thin markets move on small bets. A prop or a small-conference game can jump on one wager.
- By the time you see it, it is priced. The move is the market absorbing the information. The price you can still get is the one that matters.
Before you bet
What this means for your next bet
- Read the ticket share and the money share together, not one alone.
- Measure the move in fair chance, cut removed, not in cents.
- Rule out injury and weather news before you credit sharp money.
- Bet the price you can get now, not the one that has already gone.
Questions3 questions
What is reverse line movement?
Reverse line movement is when most bets are on one side but the line moves toward the other side. It usually means larger or more respected bets are on the less popular side.
Is reverse line movement a good betting signal?
It is a useful clue, not a bet on its own. Split data covers only some books, news can move lines too, and by the time a move is visible the best price has often gone.
What is the difference between tickets and money in betting splits?
Tickets is the share of bets placed on each side. Money is the share of dollars. A big gap between the two means a few large bets disagree with many small ones.
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