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The Odds Gap Data

Closing Line and Line Movement Data

Every book's earliest and closing price at every line since June 4, 2026, with the movement between them, so you can measure closing line value yourself.

Download Free Get Full History

Since June 4, 2026: 6,694 games from 21 books. Last game added October 6, 2026.

What's in It

  1. Each book's closing price: its last scan before the game started.
  2. Each book's earliest captured price at that same line.
  3. The movement between them, in probability points.
  4. Pinnacle's close as the sharp reference, never counted as the best price.
  5. A flag on the best closing price across the books you choose.
  6. Moneyline, spread and total for 6,694 games since June 4, 2026.

Sample

New York Jets at Chicago Bears, October 4, 2026: Chicago Bears spread at each book, earliest captured and closing price.

BookMarketEarliestCloseMovement
Pinnacle (reference)Spread -3.5-108-102-1.43 pts
Bally BetSpread -3.5-110-109-0.23 pts
BetMGMSpread -3.5-108-105-0.70 pts
BetOnlineSpread -3.5-110-113+0.67 pts
BetParxSpread -3.5-110-109-0.23 pts
BetRiversSpread -3.5-110-109-0.23 pts
BovadaSpread -3.5+100-110+2.38 pts
CaesarsSpread -3.5-106-108+0.47 pts

Download

The last 7 days, free. No signup, no key.

curl -o closing-lines.csv "https://theoddsgap.com/api/odds-history.csv?sport=all"

Try it: /data/sample.csv holds every book's prices on one finished NFL game, New York Jets at Chicago Bears. Free, no signup, no key.

Questions

What is closing line value data?

Closing line value is the price you took measured against where the market closed. This file gives every book's closing price at every line, so you can grade any bet against its close. To grade your own bets, use the CLV tracker.

Is this opening and closing line data?

Closing, exactly. Opening, nearly: each row carries the earliest price we captured for that book at that line, which is not always the market's first posted line. We call it Earliest so you know which one you have.

Are Pinnacle closing lines included?

Yes, wherever Pinnacle posted a price at that line. It sits in the file as the sharp reference and is never counted as the best price, because it is the yardstick, not a book we shop.