A UK-Friendly Glossary of NBA Handicap Betting Terms
Available in US
One of my early frustrations with American basketball betting forums was the alphabet soup of slang – ATS, RLM, dog, juice, hook, square. Half of it has crossed the Atlantic and half of it has not. UK betting culture has its own vocabulary that overlaps imperfectly with the US lexicon, and a beginner reading both sides of the conversation can feel like they are stitching together two different languages. This glossary is the document I wish I had when I started: a working, UK-friendly reference for the terms that actually appear in NBA spread betting, organised by where you encounter them rather than alphabetically. I have tried to be precise without being pedantic.
Core Spread Terms: Spread, Line, Cover, Push, Hook
The spread, also called the handicap, is the points adjustment a bookmaker applies to a matchup to even the wager. A favourite at -7 must win by more than seven; an underdog at +7 covers if they lose by less than seven, win outright, or push. The line is the spread number itself – when bettors talk about “the line moving”, they mean the spread number has changed since the open. A standard NBA spread sits at -110 (1.91) on each side, embedding roughly £10 of margin per £100 staked.
To cover means the team’s actual margin met the spread requirement. The favourite “covers -7” if they win by 8 or more. The underdog “covers +7” if they keep the loss inside seven points. To push means the result lands exactly on the spread number – favourite wins by exactly seven on a -7 line – and the bet is graded as a tie, with stakes returned. Most UK books move spreads to half-points specifically to eliminate pushes, since a graded result is cleaner administratively than refunding stakes.
The hook is the half-point on the end of a spread number. A spread of -6.5 has a hook compared to -6, and that half-point matters because it eliminates pushes while creating asymmetric value. Buying a hook means paying slightly worse odds to move from -6.5 to -6, getting back the push possibility. Selling a hook is the reverse. The hook’s value is highest at common landing margins like 3, 4, 6 and 7. For bettors completely new to placing a spread bet, the practical mechanics are walked through in a step-by-step beginner’s guide to placing your first NBA handicap bet on a UK book.
Pricing Terms: Juice, Vig, Hold, Implied Probability
Juice and vig are interchangeable American terms for the bookmaker’s built-in margin on a bet. The phrase “the juice” or “the vig” refers to the difference between fair-coin pricing and the price the book offers. At -110 (1.91) on both sides of a spread, the juice is roughly 4.5%-5% expressed as the over-round across the two prices. UK bettors more commonly say “margin” or “the over-round”, but you will see juice and vig in any forum that includes American bettors.
Hold percentage is the bookmaker’s actual realised margin across all settled bets, which is usually slightly different from the theoretical margin embedded in the prices. US sportsbook hold percentages crept from 6.7% in 2018 to north of 9% in 2024-2025, reflecting both more aggressive pricing and a growing share of higher-margin bet types like same-game parlays. UK books have generally held tighter margins on flat spreads but have expanded the higher-margin parlay menu in similar ways.
Implied probability is the percentage chance of an outcome that is built into the price. A spread bet at -110 (1.91) implies a 52.4% probability – exactly the break-even rate at that price. A bet at 4/1 (5.00) implies a 20% probability. Calculating implied probability from the price is one of the cleanest ways to read whether a bet is a good number, because it strips the maths down to a single comparison: what do I think the actual probability is, and is it higher than the implied probability the price gives me?
Market Movement Terms: Sharp, Square, Steam, Reverse Line Move
Sharp money is informed money – bets placed by professionals or syndicates whose volume is sufficient to move the line. UK books recognise sharp money quickly and adjust prices in response. Square money is recreational – bets from casual punters, typically smaller and more concentrated on popular teams or favourites. The terms are not insults. They describe two different types of market participant whose behaviour has predictable patterns.
Steam refers to a sharp, rapid line movement in one direction across multiple books. When a spread moves from -7 to -8.5 within an hour at every major UK book, that is steam. Steam usually indicates sharp money has identified a price opportunity and acted on it. The bettor reading line movement looks for steam as a signal of where the informed action is sitting.
A reverse line move is when the line moves in the opposite direction from where the public money is going. If 70% of bets are on the favourite at -7 but the line moves to -6.5, that is a reverse line move – the books are receiving disproportionately large bets on the underdog despite the public majority leaning the other way. RLMs are a classic sharp-money signal because they show the bookmaker prioritising the volume of money over the count of bets. Following RLMs is not a guaranteed edge, but ignoring them entirely is leaving information on the table.
Roster and Spot Terms: Load Management, B2B, DNP-Rest
Load management is the practice of resting healthy star players to reduce wear and protect against injury, particularly during the regular season. The IQVIA-NBA research from 2024 documented that single-game star absences across the league grew roughly fivefold over the past two decades, from 10.6 missed games per star per season in the 1990s to 23.9 in the 2020s. The data is the foundation of how spread bettors now approach late-season games involving star players.
B2B stands for back-to-back – a team playing two games on consecutive nights. Back-to-back games carry meaningful spread implications because rotations tighten, fatigue compounds, and the second night of a B2B has produced systematic underperformance against the spread for decades. UK books bake the B2B effect into their pricing, but the size of the adjustment varies and is sometimes inadequate.
DNP-Rest is the official designation when a player does not play due to rest – distinct from injury-related DNPs. The proliferation of DNP-Rest entries over the past decade is a function of load management policies, and the entries have specific spread implications: a DNP-Rest typically signals that the team has internally decided this game is not a priority, which tilts the matchup toward the opponent. Reading the DNP designation properly – rest versus injury versus suspension – is one of the small practical skills that separates careful bettors from casual ones.
UK-Specific Terms: Bet Builder, Cash Out, Acca, Each-Way
Bet Builder is the UK term for what Americans call same-game parlays. It is a product that lets you combine multiple selections from a single match into one combined bet, with the price calculated from the correlation-adjusted probability of all selections happening together. Bet builders are heavily promoted on UK books, and most NBA-targeted bet builder products combine spread, total and player props.
Cash Out is a feature that lets you settle a bet before the event finishes for an offered price. The cash-out value reflects the bookmaker’s current estimate of the bet’s win probability minus a margin. Cash-outs are convenient and often appropriate for bets that have moved sharply in your favour, but the systematic edge belongs to the bookmaker – over a large sample, taking cash-outs is more expensive than letting bets ride. Used selectively, they have a place. Used reflexively, they are a slow leak.
Acca is shorthand for accumulator – a multi-leg bet where every selection must win for the bet to pay. Accas are a UK staple but generally a poor value vehicle for NBA spread betting, because the odds compound the bookmaker’s margin across each leg. A four-leg acca on NBA spreads at -110 (1.91) per leg compounds to a price that requires hitting all four for a return that does not adequately compensate for the variance.
Each-way bets exist in some racing markets but rarely apply directly to NBA spread betting. The term occasionally appears in NBA futures markets – championship winner, conference winner – where each-way places extra emphasis on a top-finish position. For spread bettors, each-way is mostly irrelevant terminology you can safely ignore.
Is ‘ATS’ used in UK betting forums or only in US ones?
ATS – short for ‘against the spread’ – is American by origin and is used loosely in UK forums that overlap with US-based communities. Most UK-specific betting discussion uses ‘on the handicap’ or ‘against the line’ instead. The terms are interchangeable, but ATS is more common in NBA-focused content because the sport is American and most established analytical sources still use the US lexicon.
What’s the UK equivalent of an ‘underdog cover’?
UK bettors typically say ‘the dog covered the handicap’ or ‘the underdog beat the line’, which is functionally identical to the US ‘underdog covered ATS’. Some UK punters use ‘the plus side won’ to refer to the team that took the points. There is no single dominant UK phrase, and most experienced NBA bettors switch between US and UK constructions without thinking about it.
Prepared by the nba Handicap Betting editorial staff.
