Expected goals with penalties removed — a purer measure of a team or player's open-play goalscoring threat.
Non-Penalty Expected Goals (npxG) is xG with all penalty attempts excluded from the calculation. A standard penalty carries approximately 0.76 xG — a significant addition that can distort a player's or team's xG profile if they earn several penalties in a season. npxG strips out this noise, leaving a cleaner picture of open-play and set-piece (non-penalty) goalscoring threat.
npxG is particularly important when comparing players who earn different rates of penalties. A striker who scored 18 goals including 8 from the penalty spot has an xG figure inflated by roughly 6 expected goals from those penalties. Their npxG gives a truer read of how dangerous they are in open play, which is more predictive of future output.
Penalty rates fluctuate significantly year to year for teams and individuals. A team that earned 10 penalties last season may earn only 4 this season — randomness plays a significant role in how often contact in the box is deemed a foul. Penalty-adjusted metrics (npxG) are more stable predictors of future performance than raw xG that includes penalties.
For betting models, using npxG as the base metric and adding a separate expected penalty contribution (based on a longer-term penalty rate) is more accurate than using raw xG directly. This two-component approach captures both open-play quality and a regressed estimate of penalty frequency.
The gap between a player's raw xG and their npxG reveals their reliance on penalties. A striker with 2.4 xG and 1.8 npxG over 10 games is generating 0.6 xG from penalties — a significant proportion. If that player loses their penalty-taking role or earns fewer calls next season, their actual goal output could drop substantially even if their playing style is unchanged.
In fantasy football, penalty takers carry a premium precisely because penalties convert at 76% and add directly to xG and actual goal tally. However, penalty rates are volatile, so npxG helps assess what a player is worth if the penalty supply dries up.
xG (Expected Goals)
A metric that scores every shot by its probability of resulting in a goal, based on factors like shot location, angle, and assist type.
xGA (Expected Goals Against)
The expected goals conceded by a team — a measure of defensive quality based on the quality of chances allowed, not just goals shipped.
xPTS (Expected Points)
The number of league points a team would be expected to earn based on their xG and xGA across a series of matches.
Shots on Target
Attempts that require a save or result in a goal, excluding blocked shots and shots that miss the frame.
Clean Sheet
When a team concedes no goals in a match — a key metric for defenders and goalkeepers in fantasy football and defensive analysis.
For informational and educational purposes only. Disclaimer
