Opening vs closing lines

A betting line is not fixed. From the day a market opens until kickoff, the spread, total and prices can all move. Understanding opening and closing lines helps you read results fairly and see how the market changed its mind.

Opening line and closing line

The opening line is the first number a book or the consensus posts for a game, sometimes days in advance for the NFL. The closing line is the last number before the game starts. The gap between the two is the line movement. If a team opens at −3 and closes at −4.5, the market moved a point and a half toward that team.

Why lines move

• Betting action: books adjust to balance their exposure, and respected bettors can move a number faster than casual action.
• Injuries and lineups: a quarterback ruled out, a goalie change in hockey or a starting pitcher swap in baseball can shift a line quickly.
• Weather: wind and cold push football and baseball totals down.
• Information and schedule: rest days, travel and new news all feed in.

Lines also differ from book to book at the same time. FreeOdds uses a consensus view across several books so that a stale price from one book does not headline the game.

Why the closing line gets attention

By kickoff, the line contains the most information, so it is widely treated as the market's best estimate of the game. It is also the fixed, auditable number to judge a result against. That is why the FreeOdds results pages show both the open and the close for each game, and why finished games are marked against the closing line.

Against the spread and over/under results

Once a game ends, two results come out of it:

• Against the spread (ATS): did the favorite win by more than the spread, or did the underdog beat it? A team that covers wins the spread bet, whether or not it won the game.
• Over/under (O/U): did the two teams combine for more or fewer points than the total?

Say a team closes as a 6.5-point favorite and wins 27 to 17. The margin of victory is 10, which beats the spread by 3.5 points, so it covered by 3.5. If the total closed at 43.5, the game's 44 points went over by half a point.

Pushes

When the margin lands exactly on a whole-number spread (a favorite of 3 winning by exactly 3), or the combined score equals a whole-number total, the bet is a push. Stakes are returned and neither side wins. Half-point numbers like 3.5 or 44.5 cannot push, which is one reason the half-point is valuable in football.

Illustrative final: the favorite won by 10, covering 6.5 by 3.5 points; 44 points total, over 43.5.

Using it on FreeOdds

Every sport has a hub (NFL, NBA, MLB, NHL) and a results index (such as NFL results) with the open, close, ATS and O/U result for each finished game. Past results are the closing lines the site saved, and a different book may have closed at a slightly different number, so a result at your own book can differ in close games. See also what ATS records mean.

Frequently asked questions

What is a closing line?

The closing line is the last spread, total or price posted before a game starts. It is the final number the market settled on.

Why do betting lines move?

Lines move because of betting action, injuries and lineup news, weather, and other new information. Books also adjust to manage their risk.

What does covering the spread mean?

A team covers when it beats the spread: a favorite wins by more than the spread, or an underdog wins or loses by less than the spread.

What is a push?

A push happens when the result lands exactly on a whole-number line. Stakes are returned and nobody wins or loses.

Does a result on FreeOdds match my sportsbook?

Usually, but not always. Results use the closing line saved by FreeOdds, and your book may have closed at a different number.