Essential sports betting terms and definitions to help you bet smarter
New to sports betting or just want to brush up on terminology? This glossary covers everything from basic concepts like spreads and moneylines to advanced topics like reverse line movement and closing line value.
A bet where a team must win by more than the point spread (if favored) or lose by less than the spread (if underdog) to cover. Used to measure team/bettor performance.
When a team beats the point spread. A favorite covers by winning by more than the spread; an underdog covers by losing by less than the spread or winning outright.
The number of points a favorite must win by (or underdog must stay within) for a bet to win. Designed to make both sides equally attractive to bettors.
A straight bet on which team will win the game outright, with no point spread. Odds are expressed as + or - numbers.
A bet on whether the combined score of both teams will be over or under a set number.
The commission sportsbooks charge on a bet. Standard juice is -110, meaning you bet $110 to win $100.
The percentage of bets or money wagered by casual bettors on a given side. Often tracked to identify fade opportunities.
Wagers placed by professional or highly informed bettors. Often causes line movement despite being a minority of total bets.
When the betting line moves in the opposite direction of public betting percentages, indicating sharp money on the other side.
Changes to the point spread, moneyline, or total from the opening line to the current line. Driven by betting action, injuries, or market conditions.
The first betting line released by sportsbooks, often set days before the game.
The difference between the line you bet at and the closing line. Positive CLV indicates a +EV bet.
The average amount you expect to win or lose per bet over the long run. Positive EV (+EV) means the bet is profitable over time.
The percentage of profit or loss relative to total amount wagered. Calculated as (Net Profit / Total Wagered) × 100.
A standard betting size, typically 1-2% of your bankroll. Used to track performance independent of bet amount.
The total amount of money you've set aside for sports betting. Should be funds you can afford to lose.
When a bet ends in a tie (e.g., the final margin equals the spread exactly), and the original wager is refunded.
The half-point in a spread or total (e.g., -3.5 or 215.5) designed to avoid pushes.
Betting against a team, trend, or public consensus.
A single bet that combines two or more individual bets. All selections must win for the parlay to pay out, but the payout is higher than individual bets.
A bet on a specific event within a game (e.g., player stats, first team to score) rather than the final outcome.
Placing bets while a game is in progress, with odds updating in real-time based on game flow.
Betting on all possible outcomes of an event across different sportsbooks to guarantee a profit, exploiting odds discrepancies.
Betting both sides of a game at different lines, hoping the final result falls between them (winning both bets).
A sudden, significant line movement caused by a large influx of sharp money across multiple sportsbooks simultaneously.
Betting on the favorite. Casual bettors who always bet favorites are called 'chalk players.'
The team expected to lose. Underdogs have + moneylines and receive points in spread betting.
Betting against the side that a majority of casual bettors are on, often a contrarian strategy.
Start analyzing public betting data, tracking line movement, and finding sharp money signals.