Football & betting terms, decoded.

PicksIQ's estimated chance of a specific outcome happening, expressed as a percentage. A 64% model probability for Over 2.5 Goals means the model expects that outcome to land roughly 64 times out of 100 in similar conditions. It is a frequency estimate, not a guarantee.

The chance a bookmaker's odds suggest an outcome will happen, once you strip out their margin. Decimal odds of 2.00 imply a 50% chance (1 divided by 2.00). PicksIQ compares its own model probability to the implied probability of the available odds, and the gap between them is the edge.

The difference between PicksIQ's model probability and the implied probability of the available odds. If the model says 60% and the odds imply 50%, the edge is +10 percentage points. PicksIQ flags edges of around 4 percentage points or more as potential value picks.

The long-run average return of a single bet, given the odds and the true probability. EV = (probability of winning × profit if win) − (probability of losing × stake). A positive EV means the bet is statistically worthwhile over many repetitions; a negative EV means it is not. PicksIQ value picks aim for positive expected value.

A statistical model that estimates how many goals each team is likely to score in a match, based on their attacking and defensive rates against the rest of the league. PicksIQ uses Poisson to generate the goal distribution that powers the 1X2, over/under and BTTS markets.

In a Poisson model, lambda is the expected number of goals one team will score in a given match. A home lambda of 1.8 and away lambda of 1.1 produces a goal distribution from which PicksIQ derives every goals-based market. Higher lambda usually means more attacking output.

How closely a model's stated probabilities match what actually happens. A well-calibrated model that predicts 60% will see those outcomes land roughly 60% of the time across a large sample. Calibration is the most honest measure of a predictive model's value.

A measurement of how accurate a set of probabilistic forecasts has been over time. It rewards confident-and-correct predictions and punishes confident-and-wrong ones. Lower is better. PicksIQ uses Brier-style scoring internally to track whether the model is becoming more or less calibrated.

A standardised stake size used so different bettors can compare results without revealing their bankroll. One unit is typically 1% of your bankroll. A pick described as 'staking 2 units' means risking 2% of your starting balance, regardless of currency.

The amount of money risked on a single bet. PicksIQ recommends a flat 1% stake on value picks by default, with optional half-Kelly sizing for users who want to vary stake by edge size.

The total pot of money set aside for betting, kept separate from money used for living costs. Your bankroll should be an amount you can afford to lose entirely without affecting your life. Every stake size on PicksIQ is described relative to bankroll.

A staking formula that calculates the bet size which maximises long-run bankroll growth, given a probability and the available odds. Full Kelly is mathematically optimal but extremely volatile. PicksIQ uses half-Kelly, which sacrifices some growth in exchange for far lower variance.

Half of the stake the Kelly criterion recommends. It produces around 75% of full Kelly's long-run growth with roughly a quarter of the volatility, which is why most disciplined bettors and professional traders prefer it.

Profit divided by total amount staked, expressed as a percentage. A 5% ROI across 100 settled bets at £10 stake means £50 profit on £1,000 wagered. ROI is the cleanest single metric for tipping performance because it is independent of stake size.

A synonym for ROI in betting contexts. 'Yield of 4%' means £4 of profit for every £100 staked. PicksIQ uses ROI throughout the site for consistency, but you will see 'yield' used interchangeably by tipsters elsewhere.

Three-way market on the final result after 90 minutes plus stoppage time, not including extra time or penalties. 1 = home win, X = draw, 2 = away win. Extra time and penalty shoot-outs in cup competitions do not count for 1X2 settlement.

A market covering two of the three 1X2 outcomes in a single bet. 1X covers home win or draw, 12 covers home or away win, X2 covers draw or away win. Lower odds than the individual outcomes, but a higher probability of landing.

A two-way market where you back the home or away team. If the match is drawn, your stake is refunded — effectively removing the draw from the equation. Always priced shorter than the straight 1X2 because you cannot lose to a draw.

Settles Yes if both teams score at least one goal during regular time. Both 1-1 and 5-2 are Yes; 3-0 is No. BTTS is one of the most popular ancillary markets because it depends on attacking quality on both sides, not on who wins.

A market on whether the total number of goals (or corners, cards, shots) in a match will be over or under a specified line. Over 2.5 Goals lands if the match ends with three or more goals. The 0.5 endings (1.5, 2.5, 3.5) exist so there is no possible push.

A two-way market that gives one team a virtual head start (or deficit) measured in goals. A favourite priced at -1.5 must win by two clear goals; an underdog at +1.5 only needs to draw or lose by one. Quarter-goal lines (-0.75, +1.25) split the stake across two outcomes.

Total corners awarded across a match, settled against a line such as 9.5 or 10.5. PicksIQ defaults to a 9.5 line because most domestic leagues sit close to it. Note: corners count only inside regular time, not extra time.

A scoring system that converts yellow and red cards into points. Most bookmakers use 10 points per yellow and 25 per red (with the second yellow of a red card counted once). Booking-points markets bet on the combined total across both teams. PicksIQ tracks both per-team and combined booking-point trends.

Total yellow and red cards shown to both teams during regular time, settled against a line such as 3.5 or 4.5. Different from booking points — this market simply counts cards. Influenced heavily by referee tendency, which is why PicksIQ surfaces referee stats per fixture.

The European odds format used across PicksIQ. Decimal odds show the total payout per unit staked, including the stake. Odds of 2.50 return £2.50 for every £1 risked, or £1.50 of profit. Convert to implied probability by dividing 1 by the decimal odds.

The traditional UK odds format, written as 5/2, 7/4 and so on. The numerator is profit per unit of the denominator staked. 5/2 returns £5 profit on a £2 stake. To convert to decimal, divide and add 1: 5/2 = 2.5 + 1.0 = 3.50.

The bookmaker's built-in profit margin, baked into the odds across every market. A two-way market with both sides priced at 1.95 has an overround of about 2.6%, meaning the bookmaker expects to keep that much of every £100 wagered across a balanced book. Lower-margin markets are easier to find value in.

A bet where the model's estimate of the true probability is higher than the implied probability of the available odds. Hitting individual value bets is luck; consistently placing them is skill. PicksIQ flags value with a star and shows the edge in percentage points.

When a price gets longer over time — for example, a team moving from 2.10 to 2.40 in the hours before kick-off. Drift usually signals money flowing onto the other side of the market, or a negative news event such as a key player ruled out.

The opposite of drift — a sharp, fast-moving price shortening across multiple bookmakers, usually driven by sharp money or insider information. Following steam can be a useful sanity check on a value pick, though chasing it after the move is usually too late.

The difference between the odds you took and the final odds available right before kick-off. Beating the closing line consistently is the cleanest evidence that you are placing positive expected-value bets, even before knowing the result. PicksIQ's CLV tracking is being built into the model-performance surface.

A statistical measure of the quality of a goalscoring chance, expressed as the probability that an average player would score from that position. A shot from inside the six-yard box might be 0.40 xG; a header from outside the box, 0.04 xG. Team totals add up the xG of every chance created during a match.

The xG total of chances a team has conceded — a measure of defensive quality. Low xGA per match suggests a team restricts opponents to poor chances even if the scoreline says otherwise. PicksIQ uses xG and xGA on rolling windows to detect over- or under-performance against actual goal results.

Any shot that would have entered the goal if the keeper had not intervened. Counts saves and goals; excludes blocked shots and shots off-target. PicksIQ's shots-on-target tables are one of the leading indicators for goalscoring trends.

A team's recent results streak, typically over the last five or six matches. Form is a useful directional signal but a poor standalone predictor — a strong side on a bad run is still usually a strong side. PicksIQ weights form alongside longer-window strength ratings.

Average league points earned per match across a defined window. 2.3 PPG is title-challenging form; 1.0 PPG is mid-table. PicksIQ surfaces home PPG, away PPG and recent-form PPG separately on team pages because they often diverge significantly.

A match in which a team concedes zero goals during regular time. Clean-sheet rates are one of the strongest signals for whether to back over or under 2.5 goals, and they feed PicksIQ's BTTS predictions directly.