NBA Betting Glossary UK
Available in US
A Working Vocabulary for NBA Betting in the UK
Nine years of writing about NBA betting has taught me that jargon is the silent barrier between casual interest and genuine understanding. I have watched sharp people abandon a piece of analysis because they stumbled on “vig stripping” or “DvP” and assumed the content was not for them. It was — they just needed the vocabulary. This glossary exists to fix that. Every term is defined for UK bettors specifically, with fractional odds examples where relevant and plain-language explanations that connect the concept to something you already know.
A-D: Accumulator to DvP
Accumulator (Acca) — A single bet combining two or more selections, where every selection must win for the bet to pay out. The odds multiply with each leg, producing higher potential returns at lower probability. UK sportsbooks display NBA accas in the same format as football multiples. Sometimes called a parlay or multi-bet.
Against the Spread (ATS) — A team’s record when evaluated against the point spread rather than the outright result. A team that is 15-5 ATS has covered the spread in 15 of their last 20 games. ATS records are used to assess whether a team is consistently outperforming or underperforming market expectations.
Bankroll — The total amount of money you have allocated specifically for betting, separate from your living expenses and savings. Managing your bankroll using percentage-based staking is the foundation of sustainable betting.
Cash Out — A feature offered by most UK sportsbooks that lets you settle a bet before the event finishes. The cash-out value fluctuates based on current odds. Partial cash-out lets you take some profit while leaving the rest of the bet active.
Closing Line — The final odds available just before an event starts. The closing line is considered the most efficient price because it reflects all available information. Consistently beating the closing line is a strong indicator of a profitable long-term approach.
Decimal Odds — An odds format that shows the total return per unit staked, including the stake itself. Decimal 2.00 means you receive GBP 2 back for every GBP 1 staked (GBP 1 profit). Most UK sportsbooks default to fractional odds but allow toggling to decimal.
DvP (Defence vs Position) — A metric that ranks each NBA team by how many stats they allow to opposing players at each position. Used by prop bettors to identify favourable and unfavourable matchups for individual player bets.
E-M: Edge to Moneyline
Edge — The difference between a bettor’s estimated true probability and the implied probability of the bookmaker’s odds. A positive edge means you believe the bet is more likely to win than the odds suggest. Finding consistent edge is the goal of systematic betting.
Expected Value (EV, +EV) — The average profit or loss per bet over the long run. Calculated by multiplying the probability of winning by the payout and subtracting the probability of losing multiplied by the stake. A positive EV bet is theoretically profitable over a large sample.
Fractional Odds — The traditional UK odds format. 5/1 means you win GBP 5 for every GBP 1 staked (plus your stake back). 1/5 means you win GBP 1 for every GBP 5 staked. The first number is profit; the second is stake.
Handicap — See Spread. In UK basketball betting, the terms are used interchangeably. Asian handicap and European handicap variants exist with slightly different settlement rules.
Handle — The total amount of money wagered on an event or market. A high handle indicates strong market interest and typically correlates with tighter, more efficient odds.
Implied Probability — The probability of an outcome as suggested by the bookmaker’s odds. Calculated by dividing 1 by the decimal odds. For 10/11 (decimal 1.909), the implied probability is 52.4%. Includes the bookmaker’s margin.
In-Play (Live Betting) — Bets placed after an event has started. NBA in-play markets update throughout the game, with odds shifting based on the score, time remaining, and game flow. Prop markets are increasingly available in-play on UK platforms.
Juice — See Vig. American terminology for the bookmaker’s commission built into the odds.
Kelly Criterion — A mathematical formula that calculates the theoretically optimal stake size based on your estimated edge and the odds. Full Kelly is highly aggressive; most serious bettors use quarter-Kelly or half-Kelly to reduce variance.
Line — The number set by the bookmaker for a spread, total, or player prop. “The line on his points is 22.5” means the bookmaker has set the threshold at 22.5 for an over/under bet.
Moneyline (ML) — A bet on which team will win the game outright, with no spread involved. In UK format, displayed as fractional odds on each team.
N-S: No-Vig Line to Spread
No-Vig Line — The odds that would exist if the bookmaker’s margin were removed entirely. Calculated through vig stripping. The no-vig line represents the bookmaker’s true probability estimate for each outcome.
Overround — The total implied probability of all outcomes in a market, minus 100%. A two-way market where the implied probabilities sum to 105% has a 5% overround. Also called the margin. The overround is how the bookmaker guarantees a profit regardless of the result.
Pace Factor — An NBA statistic measuring the number of possessions a team uses per 48 minutes. Higher pace correlates with higher-scoring games and more statistical output for individual players. Essential for totals and player prop analysis.
Parlay — See Accumulator. American terminology for the same bet type.
Player Prop — A bet on an individual player’s statistical performance rather than the game result. Examples: over/under 22.5 points, over/under 8.5 rebounds, over/under 6.5 assists. The fastest-growing NBA market category.
Push — When the result exactly matches the line, producing neither a win nor a loss. The bet is voided and the stake returned. Occurs on whole-number lines (22.0 points) but not on half-point lines (22.5 points).
Same Game Parlay (SGP) — An accumulator where all selections come from the same game. UK sportsbooks call this a Bet Builder. Correlation between selections is priced into the odds, making SGP returns lower than a standard acca with the same number of legs.
Spread (Point Spread) — A market where the bookmaker assigns a points handicap to each team. The favourite must win by more than the spread; the underdog can lose by less than the spread and still cover. Displayed as -6.5 / +6.5 alongside fractional odds on each side.
T-Z: Totals to Vig
Total (Over/Under) — A bet on whether the combined score of both teams will finish above or below a number set by the bookmaker. The most common NBA total sits between 215 and 240, depending on the matchup.
Two-Way Contract — An NBA contract that allows a player to split time between the main roster and the G League affiliate. Two-way players have lower salaries and less stable roles, making their prop lines thinner and less reliable. Post-2025 scandal, some two-way player props have been restricted.
UKGC — The UK Gambling Commission. The regulatory body that licenses and oversees all gambling operators serving UK consumers. Every legal NBA betting site in the UK holds a UKGC licence.
Unit — A standardised bet size, typically defined as a percentage of your bankroll. Using units rather than fixed pound amounts ensures your staking scales proportionally with your bankroll. One unit commonly represents 1-2% of bankroll.
Usage Rate (USG%) — An NBA statistic estimating the percentage of team possessions a player uses while on the floor. Higher usage correlates with higher individual statistical output. Usage shifts caused by injuries or trades create prop-betting opportunities.
Value — A bet where the true probability of the outcome exceeds the implied probability of the odds offered. A value bet has positive expected value. Finding value consistently is the core objective of informed NBA betting.
Vig (Vigorish) — The commission embedded in the bookmaker’s odds. On a standard 10/11 each-side market, the vig is approximately 4.5-5%. Stripping the vig reveals the bookmaker’s true probability estimate and is essential for accurate edge calculation. Also called juice, margin or overround (though overround is the total across both sides). A detailed walkthrough of how vig works across NBA markets is available in the NBA betting odds guide.
What is the difference between vig and overround?
Vig refers to the commission the bookmaker charges on each individual side of a market, expressed as the gap between the fair odds and the displayed odds. Overround is the total implied probability of all outcomes in a market minus 100% — it measures the combined margin across both sides. For a two-way NBA prop priced at 10/11 on each side, the vig on each side is about 2.4% and the total overround is about 4.8%.
What does ATS mean in NBA betting?
ATS stands for Against the Spread. It measures a team’s record when evaluated against the bookmaker’s point spread rather than the outright win/loss result. A team with a strong ATS record is consistently outperforming market expectations, which can signal value in related player prop markets for that team’s players.
Prepared by the nba Player Betting editorial staff.
