“Before the World Cup I wrote a quick post on Shot Segmentation with the aim to classify the 10,000 or so shots taken during the 2013/14 season into a smaller number of groups to try and quantify the ‘quality’ of opportunities each side has (and concedes). The full background is here, but basically is a case of using a mix of Opta’s big chance metric to get beyond just using location data, combined with location and shot type (e.g., was the attempt a header).  It’s not as good as having the full video of every shot but is an improvement on just knowing shot volume.” We Are Premier League