Betting Glossary

A comprehensive glossary of betting terminology. Browse by category or search for specific terms to understand the language of sports betting.

Odds & Fundamentals

Action

Action is the general term for any bet placed, or the total volume of money wagered on an event or outcome.

Against the Spread (ATS)

A bet judged against a handicap (spread) rather than the final result — did the side cover the points/games margin, not just win?

Bad Beat

A bad beat is a well-judged bet that looked all but won, then lost through a freak, very late, or statistically unlikely twist.

Cover

Cover means a team or player beats a handicap line, not just the scoreline — the deciding factor in spread and Asian Handicap bets.

Even Money

Even money (2.00 decimal, 1/1 fractional) is a price where a winning bet returns exactly double the stake, implying a 50% break-even chance.

Favorite vs Underdog

The favorite is the side priced to win (odds under 2.00); the underdog is priced against, offering longer odds for a less likely result.

Hook

The half-point added to a spread or totals line so the bet can never push, forcing every wager to a clean win or loss.

Implied Probability

Implied probability converts betting odds into a percentage chance of an outcome, showing what the price says will happen and where the bookmaker's margin sits.

Juice / Vigorish (Vig)

Juice (or vigorish) is the built-in margin a bookmaker bakes into its odds, the reason a market's true probabilities add up to more than 100%.

Moneyline

A moneyline bet backs one side to win a match outright, with no points handicap or spread attached to the odds.

No Action

A settlement status where a placed bet is cancelled and the stake refunded in full because the market failed to resolve as originally wagered.

Odds Formats

Odds formats are the different notations—decimal, fractional and moneyline—bookmakers use to display the same price and implied probability.

Off the Board

"Off the board" means a bookmaker has pulled a market from sale, so no new bets on that event or selection are being accepted.

Over/Under (Totals)

A bet on whether a match's combined statistic (usually goals) lands above or below a fixed number set by the bookmaker.

Pick'em

A pick'em is a match priced so tightly that neither side carries a real statistical edge, leaving the bookmaker's margin as the only difference.

Point Spread

A handicap in points applied to a team to level a mismatched game, letting bettors wager on the margin of victory rather than the winner.

Push

A push is a graded bet where the result lands exactly on the line, so the stake is simply returned with no win or loss.

Straight Bet

A straight bet is a single wager on one outcome at its own odds, settled entirely on whether that one result happens.

Bet Types

Asian Handicap

Asian Handicap is a goal-line betting market that adds or subtracts a virtual head start to level up two unevenly matched teams.

Cash Out

Cash Out lets a bettor settle a wager before the event finishes, taking a bookmaker-calculated value based on current odds instead of waiting for the result.

Double Chance

A single bet covering two of the three possible match results (e.g. home win or draw), sacrificing odds for a wider safety margin.

Futures Bet

A futures bet is a wager placed on a long-term outcome, such as a league title or tournament winner, settled weeks or months after the stake is placed.

Hedging

Hedging means placing a second, opposing bet on the same event so you lock in a profit or cap a loss no matter which way the result goes.

Live Betting (In-Play)

Live betting lets you back or lay outcomes on a sporting event after it has kicked off, with odds updating in real time.

Parlay (Accumulator)

A parlay (accumulator) combines multiple selections into one bet that pays out only if every leg wins, multiplying the odds together.

Player Prop vs Game Prop

A player prop bets on an individual's stats within a match; a game prop bets on a match-level outcome unrelated to the final score.

Prop Bet (Proposition Bet)

A prop bet is a wager on a specific occurrence inside a match, separate from who wins or the final scoreline.

Round Robin

A round robin combines three or more selections into every possible double, treble and multiple, so the bet can still pay out even if one leg loses.

Run Line / Puck Line

A fixed handicap bet from baseball and ice hockey where the favourite must win by more than 1.5 runs or goals, priced through shifting odds rather than a moving line.

Same-Game Parlay

A same-game parlay bundles several bets from one match into a single wager, priced below simple multiplication because the legs aren't independent.

Teaser

A teaser combines two or more spread or total selections into one bet, letting you move each line in your favour for a lower, fixed payout.

Value & Strategy

Arbitrage Betting

Arbitrage betting exploits price gaps between bookmakers to back every outcome of an event for a guaranteed profit, regardless of the result.

Bankroll

A bettor's bankroll is the pot of money set aside solely for betting, managed separately from everyday finances to survive losing streaks.

Buying Points

Buying points means paying extra vig to shift a spread or total by half a goal, in exchange for worse odds on the same bet.

Closing Line Value (CLV)

Closing Line Value (CLV) measures whether the odds you backed beat the final market price, showing if you got a better price than the market settled on.

Edge

Edge is the gap between a bettor's true probability estimate and the bookmaker's implied probability, the source of long-run profit.

Expected Value (EV)

Expected Value (EV) is the average profit or loss a bet would return if placed repeatedly, based on your estimated true probability versus the odds on offer.

Fade the Public (Contrarian Betting)

Fading the public means deliberately betting against the side attracting the most money, on the theory that heavy public backing skews prices in your favour.

Kelly Criterion

A staking formula that sizes each bet as a fraction of your bankroll in proportion to your edge, maximising long-run bankroll growth.

Key Numbers

Key numbers are the goal, game or point margins where results cluster most often, making handicap and total lines set at them move price far more sharply.

Line Shopping

Line shopping is comparing the same bet across multiple bookmakers before staking, to secure the best available price.

Matched Betting

Matched betting locks in a guaranteed profit by backing an outcome at a bookmaker and laying it on an exchange, mainly to cash in free bet offers.

Middling

Middling means betting both sides of a market at two different lines, so a specific result wins both bets for a bonus payout.

ROI (Return on Investment)

ROI measures the profit a betting strategy returns as a percentage of everything staked, revealing whether it actually makes money.

Steam Move

A steam move is a sudden, market-wide shortening of a price triggered by heavy or sharp money, signalling where informed cash is landing.

Tout

A tout sells betting tips or picks for a fee, profiting from subscriptions rather than from the bets themselves being right.

Units

A unit is a fixed slice of your bankroll (not a currency amount) used to size every bet consistently and track results without exposing your stake size.

Variance (in Betting)

Variance measures how far actual betting results swing away from expected value, even when the underlying edge is real.

Market Terms

Betting Handle

Betting handle is the total sum of money staked on an event or market over a given period, a volume figure rather than a profit one.

Betting Limits

The maximum stake or liability a bookmaker allows on a bet, market or account, used to manage the firm's own risk exposure.

Chalk

Chalk is betting slang for the clear favourite in an event — the side or player attracting the most money and the shortest odds.

Line Movement

Line movement is the change in a bookmaker's odds for a market between opening and kick-off, driven by money, news, and risk management.

Oddsmaker / Bookmaker

A bookmaker (or oddsmaker) sets betting prices by converting probability into odds and building in a margin that guarantees a long-run edge.

Opening Line / Closing Line

The opening line is a market's first posted odds; the closing line is its final odds before the event starts, and the gap between them measures how sharp your bet was.

Public Betting Percentage

The share of bets (by ticket count or stake) placed on one side of a market, used to spot where the crowd — and the smart money — are leaning.

Reverse Line Movement

Reverse line movement is when odds shift against the side taking the most bets, revealing that sharper, heavier stakes are backing the other outcome.

Sharp vs Square

Sharp and square describe a bettor's skill level and how bookmakers treat them, from sophisticated line-movers to casual, recreational punters.

Stale Line

A stale line is a posted price that hasn't yet been adjusted for new information, letting sharp bettors get better odds than the market now justifies.