Understanding Post-Shot Expected Goals (PSXG)

Post-shot expected goals (PSXG) is a measurement used primarily to evaluate the effectiveness of goalkeepers and the quality of finishes by players. A shot must be on target to generate a PSXG, meaning that missed shots automatically receive a value of zero. This model takes into account factors like shot velocity and angle, allowing for nuanced analysis of a player’s finishing ability. For example, a straightforward tap-in might have a PSXG of 1.00, confirming that the shot is expected to result in a goal, while less straightforward attempts can show lower PSXG values and highlight the goalkeeper's effectiveness.