The score says how it ended. xG says how it should have ended: it is the sum of the chances each shot was worth, not an opinion about the game.
A draw, but Napoli created more (2.13 xG against 1.06) — points dropped.
| Team | Goals | xG | Goals − xG | Expected points |
|---|---|---|---|---|
| Fiorentina | 1 | 1.06 | −0.1 | 0.74 |
| Napoli | 1 | 2.13 | −1.1 | 2.06 |
Fiorentina: −2.3 for the season (17 in the table). Napoli: −1.8 (9). The gap between points and xPTS is built from matches like this one.