How to read a line

Sixty-Two Percent Of The Tickets, Ten Percent Of The Money

Three baseball games this morning, one of them the Giants, and the three things a reader needs to read a betting market without anybody's help: what the ticket count says, what the money says, and why the closing number is the only honest grade of a bet.

CM
Casey MontgomeryJul 31, 20266 min read
Every call on this site goes on a public ledger and gets graded. The misses stay up.

Eighty-two percent of the moneyline tickets on tonight's Giants game are on San Diego. Eighty-two percent of the money is on San Diego too.

Those are DraftKings' published splits for Friday, read at 8:18 a.m. Pacific, with the Padres at minus 150 and San Francisco at plus 124. Two numbers landing on the same figure is the least interesting thing on the board this morning, and it is where this has to start, because everything worth reading in a betting market happens when they come apart.

In Atlanta they come apart.

The Nationals play the Braves at 7:15 Eastern. Sixty-two percent of DraftKings' moneyline tickets are on the Braves at minus 118. Ten percent of the money is.

A ticket is a person. Handle is a bankroll.#

A ticket is one bet, of any size. Your twenty dollars and somebody's forty thousand count once each. Handle is the dollars themselves. A book that publishes both is telling you how many of its customers like a side, and then, separately, how much they like it.

Usually those track together, which is what the Giants game looks like. When they separate by fifty points the book is no longer facing a crowd on one side. It is facing a few large accounts on the other. VSiN, whose splits come off the same DraftKings feed, says the money can land on the unpopular side "due to a few large bets."

So: the average bet on Atlanta is small and the average bet on Washington is not. That is the whole signal. Nobody tells you whose accounts those are, and a book that keeps taking their action has already said what it thinks of them.

Here is the gap across nine live markets in three games, all read off DraftKings inside the same eleven minutes this morning.

Where the money disagreed with the crowd, nine markets, Friday morning

Handle percentage minus ticket percentage, on whichever side held the larger share of the money. DraftKings splits as published on its Friday July 31, 2026 game pages, read between 8:15 and 8:26 a.m. Pacific. Three games, three markets each: moneyline, run line and total. Zero means the dollars and the bet count agreed exactly.

Royals +1.5run line, at Colorado
67
Nationalsmoneyline, at Atlanta
52
Over 9total, at Atlanta
48
Nationals -1.5run line, at Atlanta
35
Over 11total, at Colorado
29
Padres -1.5run line, vs the Giants
23
Over 8.5total, Giants at San Diego
5
Rockiesmoneyline, vs Kansas City
4
Padresmoneyline, vs the Giants
0

The loudest number there is not the one I opened with. Twenty percent of the tickets on the Royals run line at Coors Field hold eighty-seven percent of the money. Run lines do this more than moneylines do, because a run line is where a big position on a short favorite goes to find a price worth betting.

The price moved the wrong way#

Sixty-two percent of tickets on Atlanta should push the Braves' number up. Books shade toward the volume, because that is the side they will owe. Atlanta opened at minus 131 on VegasInsider's board and DraftKings has the Braves at minus 118 this morning. Thirteen cents the other way.

That is reverse line movement: a price moving against the side holding the ticket majority. It is the most useful thing an ordinary bettor can learn to see, and the split you just read explains it. Ninety percent of the dollars are on Washington, so the book moved toward the dollars and away from the crowd, which is the choice it makes every time those two conflict.

Two controls from the same morning, so the term keeps its meaning. The Giants game opened at San Diego minus 146 and sits at minus 150, four cents toward the side holding eighty-two percent of everything. Ordinary. The total in Atlanta opened at 8.5 and is 9 now on ninety-seven percent of the money, a big move by money that had no crowd to move against, since the ticket count there is 49 against 51. One of three moves this morning is reverse, which is about what a normal day looks like. A reader who starts finding reverse line movement in every game has stopped measuring and started seeing faces in clouds.

Four limits, because a method you cannot break is a sales pitch. A split is a fact about one book's customers rather than about the public, and DraftKings' clientele is not Circa's. DraftKings does not publish its own opener on the splits page, so the minus 131 above is an odds board's opening number set against DraftKings' current price; that board's consensus matches DraftKings to the cent this morning, which is the only reason I will print it. Books also move for reasons nobody sharp had anything to do with: a scratched starter, wind in Denver, last night's exposure. And all of it decays. The live splits page updates every five minutes, so a split quoted without the time it was taken is a memory rather than a fact.

The grade is the close, not the result#

This is the part that outranks the other two, and it runs on a calculator.

Convert a price into the probability it implies. Washington opened at plus 109, so a hundred dollars wins a hundred and nine and the implied probability is 100 divided by 209, or 47.85 percent. Atlanta at minus 131 implies 56.71. Add them and you get 104.56, where an honest pair would sum to 100, and the extra 4.56 is the house margin. Divide both by 1.0456 to remove it: Washington 45.76, Atlanta 54.24.

Same three steps on this morning's number. Minus 102 implies 50.50, minus 118 implies 54.13, the sum is 104.62, and Washington comes out at 48.26. The honest read moved two and a half points overnight while most of the bets went the other way.

Now the point. Somebody holding Washington at plus 109 needs Washington to win 47.85 percent of the time to break even, and the market now says 48.26. That ticket was a bad bet when it was struck, by the market's own estimate at the time, and it is a good one this morning, and nobody has thrown a pitch. Tonight's result will not change either sentence.

That is closing line value. It beats win-loss because it measures the decision instead of the outcome. The closing number is the last price the market makes, with the lineup card and the weather and the late money already inside it, and nothing improves on it because nothing comes after it. Grading against the close asks whether you found a better price than the best estimate anybody published on that game. Grading against the result asks whether a baseball bounced your way, which one game answers loudly and wrongly.

A bettor who beats the closing number and loses on Friday had a good Friday. A bettor who takes a team at minus 130, watches it drift to minus 115 and cashes anyway got paid for being wrong, and will keep doing it until it stops paying.

Two things keep that honest. Closing line value is not money and cannot be spent, and a bettor who beats the close every week while betting more than a bankroll absorbs still arrives at zero. And this desk takes its closing price from the same book the position was logged at, every time, because shopping the close across books to flatter the number would make the whole record worthless.

What I am putting on the record#

No plays today, because this is a column about how to read a market and a play would crowd it out. The record itself is live and it is empty. Every position that goes on it will be logged before the event starts, at a named book, at a stated price, with the reasoning published first, and it will be scored on closing line value before profit. Nothing gets deleted from it, including the months I would rather you did not see.

The call, dated and scoreable by a stranger: on the eight Friday cards from August 7 through September 25, take every MLB game where DraftKings' published splits show one moneyline side holding a handle share at least 25 points above its own ticket share. In at least 60 percent of those games, the consensus closing moneyline on that side finishes shorter than the price printed beside the split. Under 25 qualifying games the call is void rather than scored, and the count gets printed either way.

If the money side does not systematically close shorter, the gap I just spent a column teaching you to find is decoration, and I would rather learn that in public than write around it until February.

Key numbers and what it costs to buy a half point are next month. They are worth more once you can see which side the money is on.

The read

The ticket count says how many people like a side and the handle says how much, and when those separate by fifty points the second one is what the book listens to. A price that moves against its own crowd has been told something. And a bet is good or bad at the moment it is struck, at the price it was struck at, which is why the close is the grade and the box score is not. Nothing here is advice. It is a public record of calls made at stated prices, and every figure in it can be re-pulled by anyone who wants to check me.

Splits and current prices: DraftKings, from its published Friday July 31, 2026 game splits, read between 8:15 and 8:26 a.m. Pacific. Opening and consensus prices: VegasInsider's Las Vegas MLB board, same morning. Implied probabilities and margin removal use the standard proportional method. First pitch 7:15 p.m. Eastern in Atlanta, 8:40 at Coors Field.

Betting content is for readers 21 and over. If gambling stops being entertainment, the National Problem Gambling Helpline is 1-800-522-4700, free, confidential, and answered 24 hours a day.

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