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The Telegraph - July 25, 2017

‘Expected goals’ (xG): What is it, and how does it show Man City should win the Premier League this season?

By: Charlie Eccleshare

As Patrick Lucey, director of data science at STATS, explains, EGV is based on a number of factors, such as where the shot was taken from, the proximity of defenders, the nature of the attack (i.e a direct free-kick or a penalty). The EGV of a shot assumes it is being taken by someone of average ability in the league, so it expects for instance that a shot from 10 yards out plum in front of goal with no defenders nearby has a high chance of ending up as a goal.

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