What Is a Player Prop

A player prop, short for proposition, is a bet on one player's stat in a single game. Not who wins, not the final score, just a number for one player: how many passing yards a quarterback throws, how many points a guard scores, how many strikeouts a pitcher records.

The two parts of a prop

Every prop has two parts. The first is the stat: the player and the exact thing being counted, like Receiving Yards or Total Bases. The second is the number the sportsbook sets, called the line. If a book posts a quarterback at 224.5 passing yards, then 224.5 is the line.

Lines often end in a half point, and there is a reason. A number ending in .5 can never be landed on exactly, so there is no tie. A quarterback either throws 225 yards or more and clears 224.5, or he throws 224 or fewer and falls short.

Over or under

Once the line is set, the only question left is over or under. Over means you think the player beats the number. Under means you think he stays below it. That is the whole shape of a player prop. There is a fuller walkthrough in over and under explained.

The price

Each side of a prop carries a price, written as odds like -110 or +150. The price tells you what a winning bet pays and, read another way, how likely the book thinks that side is. How to read betting odds covers turning a price into a percentage.

Common prop types

Props exist for most of what a box score tracks. A few by sport:

• NFL: passing yards, rushing yards, receptions, receiving yards, touchdowns.
• MLB: strikeouts, hits, total bases, home runs, runs plus RBIs.
• NBA: points, rebounds, assists, three-pointers made.

Why people check recent games first

A line is a guess about one game, and the plainest way to sanity-check it is to look at what the player has actually done lately. If the line is 224.5 passing yards, it helps to know how many of his recent games cleared 224.5. That count is a hit rate, and it is not a promise about the next game, only a record of the last few. See what a hit rate is for why the difference matters.

One more thing to know early: books move lines as news comes in, so a line you saw in the morning can be a different number by game time.

How a prop differs from betting the game

A prop is about one player, which is what sets it apart from the more familiar bets on a game. Betting the moneyline is picking who wins. Betting the spread is picking a team to win by more or less than a set margin. A player prop ignores the final result and asks only about one player's stat, which is why a prop can win in a game your team lost and lose in a game it won. It lives or dies on one line in the box score.

Alternate lines

Books often post more than one number for the same stat, called alternate lines. The main line might be 59.5 receiving yards, with an alternate at 79.5 that pays more because it is harder to clear, and one at 39.5 that pays less because it is easier. Same player, same stat, a different number and a different price. It is the same over and under idea, with the book offering a menu of numbers to answer it about.