Player Prop Lines Explained: Over, Under, Half-Points and Prices
A player prop is a bet, or a published number, tied to one player's stat in one game rather than to the final score. If you have ever seen "Over 64.5 receiving yards" next to a receiver's name, you have seen a prop line. This guide explains each piece.
The parts of a prop
- The player and the stat. For example, a wide receiver and receiving yards, or a guard and points.
- The line. The number the stat must beat, such as 64.5.
- The over and the under. The over wins if the player's stat finishes above the line; the under wins if it finishes below.
- The price. Each side usually has its own price, written in American odds such as -115 or +105.
Why lines end in .5
Most prop lines end in a half point so that the result can never land exactly on the number. With a line of 64.5 receiving yards, a player either has 64 or fewer (under) or 65 or more (over). There is no "push". Some lines are whole numbers, such as 5 receptions. If the player finishes on exactly 5, the bet is typically returned, but the rules differ between sportsbooks.
Reading American odds
American odds show how much you would win relative to a stake:
- Negative odds such as -110 show how much you must stake to win 100. Staking 110 wins 100 (plus your stake back).
- Positive odds such as +150 show how much you win on a stake of 100. Staking 100 wins 150.
Both can be turned into the probability the price implies:
- For negative odds: probability = odds ÷ (odds + 100), using the number without the minus sign. At -110, that is 110 ÷ 210 = 52.4%.
- For positive odds: probability = 100 ÷ (odds + 100). At +150, that is 100 ÷ 250 = 40%.
Why both sides add up to more than 100%
A typical prop is priced at -110 on both the over and the under. Each implies 52.4%, so together they add up to about 104.8%. The extra 4.8% is the sportsbook's margin, often called the vig or juice. It is why a line that is truly a coin flip still costs more to bet than it pays.
This also tells you what a hit rate has to beat. At -110, a side needs to win more than about 52.4% of the time to be worth its price. A 60% hit rate over a handful of games is not the same as a 60% chance of winning the next one; see how to read a hit rate.
Lines move
Sportsbooks change both the line and the prices as news arrives, such as an injury report or a lineup change, and as money comes in. The same player can show 64.5 at one book and 66.5 at another at the same moment. ArchivePicks reads posted lines from several sources and refreshes them every couple of minutes, but a price you see can be slightly out of date and may already have moved. The methodology lists the sources for each sport.
What to take away
A prop line is a number, a side and a price. The price carries a margin, the line carries no guarantee, and history such as a hit rate is context rather than a forecast. ArchivePicks shows the numbers; it does not take bets and does not tell you which side to take.