In 2017, BBC’s Match of the Day introduced a new statistic in their post-match summaries of Premier League matches. Expected goals, or xG, is designed to tell us how many goals a team should have scored based on the quality of the chances they created in a game. It is loved by amateur and professional statisticians alike who want to use data to analyze performance.
Click here for original story, A brief history of statistics in soccer: Why actual goals remain king in predicting who will win
Source: Phys.org