Jed I. Knight
The Mos Eisley Hillbilly
Yes, I consider myself corrected in this stance. I checked up on Opta's definition, which I consider to be the ones who define the term at any given time, since they introduced it. You are correct that they use other factors in their regression model apart from just where the shot is made, as per this article. Apologies for making a fuss!I don't think you know as much about xG as you think you do if you state, "It only looks at where on the pitch the finish is made." It depends on the model used. There is not a single, unified xG model. Some are more sophisticated than others. Some account for shot location, shot type, assist type, defensive pressure, goalkeeper location, form of attacking play etc.
See, for example, Caley.