A–F Terms
Accumulator — A multiple bet linking two or more selections where the return from each winning leg rolls forward as the stake for the next. All legs must win. Also called a double (two legs), treble (three), or four-fold and above.
Ante-post — A bet placed before race day, typically on feature events such as the English Greyhound Derby. The price is fixed at the time of betting. Non-runner rules vary by operator.
A grades — The standard open graded racing classification at GBGB-licensed tracks, running from A1 (highest) downward. A grades designate sprint and non-sprint distances in the track’s standard programme.
B grade — Grade designation for races restricted to bitches. B grades run in parallel with A grades and reflect the generally slightly slower pace of female runners.
BAGS — Bookmakers’ Afternoon Greyhound Services. The commercial arrangement under which selected GBGB-licensed tracks provide daytime racing for the bookmaker betting market. BAGS races run on weekday afternoons. Full schedules are published at racingpost.com/greyhounds.
Best Odds Guaranteed (BOG) — A bookmaker promotion paying the starting price if it is higher than the early price taken at the time of the bet. BOG is less consistently available on greyhound racing than on horse racing.
Betting exchange — A platform matching bettors against each other. The exchange charges commission on winning bets rather than building a margin into the odds. Betfair is the primary UK greyhound exchange. Both back and lay bets are available.
Combination forecast — A forecast bet covering all possible orderings of two or more nominated dogs. Three dogs produce six orderings at six times the unit stake. Two dogs produce a reverse forecast.
Computer Straight Forecast (CSF) — The settlement formula for straight forecast bets. The CSF dividend is calculated from the starting prices of the winner and second-placed dog, weighted by field size. Results can differ substantially from simple fixed-odds pairings.
Computer Tricast (CT) — The settlement formula for tricast bets, applied to the first, second, and third finishers. The CT dividend tends to be higher when an outsider features in the places, because the formula amplifies the effect of high SPs.
Drifter — A selection whose price lengthens between market open and the off. A drifting dog on the exchange in the final minutes may indicate informed money moving elsewhere.
Each-way — A dual bet: one half on the win, one half on the place. In a six-runner field, standard terms are first and second at ¼ of the win odds. Seven and eight runners pay three places at ¼ odds.
Early price — A price taken before the final market forms. Held at the taken odds regardless of subsequent movement, subject to BOG terms if applicable.
Exchange commission — The fee charged by a betting exchange on net winnings per market. Betfair’s standard rate is 2 percent; higher rates apply to consistently profitable accounts under the Premium Charge structure.
Form string — The sequence of a dog’s recent finishing positions on the race card, read right (most recent) to left (older). A slash marks a season break or significant absence.
Forecast — A bet on the first and second finishers. A straight forecast requires the correct order; a reverse forecast covers both orderings at double stake.
G–M Terms
GBGB — Greyhound Board of Great Britain. The regulatory body for commercial greyhound racing in England, Scotland, and Wales, formed in 2009. The GBGB licenses tracks, racing personnel, and dogs, and sets the rules under which all official UK greyhound racing is conducted.
Going — The condition of the track surface on a given race day, ranging from heavy (slow, wet) to firm or fast (dry, quick). Going affects race times and running styles, with inside runners typically benefiting more on heavier going.
Going allowance — A time adjustment applied to race times to account for surface conditions, enabling more accurate cross-meeting time comparisons. Available for some tracks via Racing Post form records.
Grader — Informal term for a dog systematically placed by its trainer in grades below its demonstrated ability, targeting a specific winnable race once the price is favourable. Grade management of this kind is a recognised pattern in GBGB greyhound racing.
Gross Gambling Yield (GGY) — The bookmaker’s gross profit before operating costs, defined as stakes minus winnings paid. The Point of Consumption tax is levied on UK GGY at 21 percent.
Hare — The mechanical lure used to start a greyhound race. If the hare fails during a race, the meeting is typically suspended and all bets are voided.
In-running / in-play — Betting that takes place after a race has started. Betfair Exchange offers genuine in-running greyhound markets for supported GBGB meetings. Most fixed-odds bookmakers suspend markets at the off and offer only cash-out on pre-race bets during the race.
Jackpot — A Tote pool bet requiring the winner of six consecutive nominated races. The Jackpot rolls over when no ticket covers all six winners, building the prize across meetings.
Kelly Criterion — A mathematical staking formula that calculates the optimal bankroll fraction to stake based on estimated edge and available odds. Full Kelly maximises long-run growth; fractional Kelly reduces variance at the cost of proportionally lower returns.
Lay bet — An exchange bet acting as bookmaker — accepting another user’s stake on a selection, expecting it to lose. If it wins, the layer pays out at the agreed odds. Liability equals (odds − 1) × stake.
Levy — The statutory contribution from bookmaker greyhound turnover funding prize money, track operations, and integrity services, administered by the GBGB.
Liquidity — The volume of money available to match at a given exchange price. Greyhound exchange liquidity is materially lower than horse racing liquidity, particularly on smaller BAGS meetings.
Market movement — The change in a dog’s price between market open and the off. A shortening price indicates net backing; a lengthening price indicates net laying or insufficient support.
N–S Terms
Non-runner — A dog withdrawn before the traps open. In win and each-way bets, most bookmakers apply non-runner deductions to remaining selections. In accumulators, the leg is typically voided and the remaining legs continue.
Odds-on — A price where potential profit is less than the stake; implied win probability exceeds 50 percent. Fractionally, odds-on has the denominator larger than numerator: 4/7, 1/2, 2/5. In decimal, all odds-on prices are below 2.0.
Overround — The aggregate implied probability of all runners in a race exceeding 100 percent. The overround is the bookmaker’s built-in margin. A 120 percent overround means the book retains approximately 16.7p for every £1 staked across the field at the correct proportions.
Placepot — A Tote pool bet requiring a placed selection in each of six nominated races. The most widely bet sequential Tote product in UK racing. Standard place terms are first and second in a six-runner field.
Point of Consumption (POC) tax — A 21 percent levy on the gross gambling yield generated from UK customers, payable by the operator regardless of where it is based. Introduced in December 2014, increased from 15 percent to 21 percent in October 2019.
Premium Charge — A Betfair Exchange contractual fee levied on consistently and significantly profitable accounts, assessed on net profits above a high threshold. Not an HMRC tax. Affects a small minority of professional traders.
Rail runner — A dog that runs close to the inside rail through the bends. Rail runners perform well from inside traps at right-handed ovals with tight first bends and are vulnerable to wide-breaking rivals at narrow circuits.
Racing Post — The primary form reference for UK greyhound and horse racing at racingpost.com/greyhounds. Provides race cards, form records, trap statistics, analyst selections, and time comparisons for all GBGB-licensed meetings.
Reverse forecast — A forecast covering both orderings of two nominated dogs finishing first and second. At double the unit stake, it pays the CSF dividend on whichever ordering occurs. The most common forecast bet format in greyhound racing.
S grade — Grade designation for stayers races at GBGB tracks, typically 550 metres or more. Trap bias is less pronounced at stayers distances; stamina and bend-running ability are more significant analytical variables than early pace.
Sectional time — A split time for a portion of a greyhound race, providing early-pace data separate from overall race time. Available at a limited number of GBGB tracks. Where present, sectional data is a valuable analytical supplement to race times.
Self-exclusion — A voluntary commitment to stop gambling at one or more platforms. Operator-level exclusion blocks a specific bookmaker. National exclusion via GAMSTOP simultaneously blocks all UKGC-licensed platforms for a minimum of six months.
Starting price (SP) — The official odds at the moment a race begins, compiled from bookmaker market prices at the off. SP is the settlement basis for SP bets and the input to CSF and Computer Tricast calculations.
T–Z Terms
Tissue price — The preliminary market price compiled by a form analyst before bookmaker markets open, representing an informed starting estimate of each runner’s probability of winning. The Racing Post greyhound tissue prices are one of the most widely used reference points for early-morning greyhound market assessment.
Tote — Pool betting system in which all bets on a specific market type are aggregated into a single pool, and the dividend is calculated by dividing the pool (after a deduction by the Tote operator) among the winning tickets. UK greyhound Tote betting is primarily operated by Betfred.
Trap — The numbered starting box from which a dog begins a race. UK greyhound races use six traps, numbered 1 (inside/rail) to 6 (outside/wide). Trap position is one of the primary analytical variables in greyhound form reading, as the draw to inside or outside traps interacts with track geometry to create statistically measurable advantages or disadvantages.
Trap bias — The tendency of specific trap positions at a specific track to produce winning outcomes at rates above or below the neutral baseline of one-sixth (16.7 percent) for a six-runner field. Inside trap bias is common at right-handed BAGS tracks. The magnitude of the bias varies by track layout, surface condition, and distance.
Tricast — A bet predicting the first, second, and third finishers in a race in the correct order. The straight tricast requires the exact order; the combination tricast covers all possible orderings of three nominated dogs at six times the unit stake. Settled at the Computer Tricast dividend.
UKGC — UK Gambling Commission. The statutory regulator for commercial gambling in Great Britain under the Gambling Act 2005. All operators accepting bets from UK customers are required to hold a UKGC operating licence, subject to its licence conditions and codes of practice.
Value — A bet in which the odds available are higher than the true probability of the outcome occurring would justify. A dog with a genuine 35 percent chance of winning priced at 3/1 (implying approximately 25 percent probability) represents a value bet. Identifying and consistently acting on value is the foundational objective of analytical greyhound betting.
Virtual greyhound racing — A computer-generated simulation of a dog race, with outcomes determined by a certified Random Number Generator. No live animals, no real track, no form analysis applicable. Available at most UKGC-licensed bookmakers as a separate product from real GBGB-licensed greyhound racing.
Wide runner — A dog with a running style characterised by tracking the outside of the bends rather than cutting to the rail. Wide runners tend to perform better at larger-circuit tracks with sweeping bends — such as Wimbledon — and face a positional disadvantage at tight right-handed ovals where the distance differential between the inside and outside lines is most pronounced.
How to Use This Glossary When Betting
The terms in this glossary represent the working vocabulary of UK greyhound betting — the language used in form cards, race commentary, bookmaker interfaces, and analytical discussions. Fluency with these terms is not an academic exercise; it is a practical prerequisite for reading form correctly, interpreting market signals accurately, and using the full range of available bet types without ambiguity.
The most immediately useful section for new punters is the form-card vocabulary: form string, grade, going, sectional time, and trap. These terms appear on every race card and carry analytical content that shapes every selection decision. The betting mechanics vocabulary — CSF, tricast, reverse forecast, overround — is essential for understanding what you are actually wagering and how your return is calculated. Return to this glossary when a term appears in a form discussion or race preview that you have not encountered before. The investment pays back every time it converts a new term into a usable analytical concept.
Language Is the First Tool in Betting
Before form, before odds, before staking — the ability to read a race card accurately and understand what each data point is telling you depends entirely on knowing what the terms mean. Every analytical error rooted in misreading a form string, misunderstanding a grade designation, or confusing a reverse forecast with a straight forecast costs money directly. The glossary is not supporting material. It is infrastructure.
Learn the vocabulary. Use it consistently. And when a new term appears in a context you have not seen before, look it up before you bet on it.