for me, it’s pretty confusing in quite a few instances, but, just to give an example: if the striker shoots and the keeper saves it, but the striker taps in the rebound, how is xG counted? is it counted twice or just once? or, what if neither shot goes in?
He’s scored 111 premier league goals in 280 matches. I don’t need to see his xG over several years to know he’s a prolific goalscorer.
Okay, but goalscoring is not just about finishing, it’s about getting yourself into dangerous positions to shoot from. xG is not the be all and end all, but it tells you how effective a player is when it comes to finishing chances from given positions. Say you had 2 sons, both with 111 goals in 280 matches, but one had an xG of 130 and the other of 90, you would clearly be putting your money on the latter as that demonstrates they are more clinical.
111 sounds nice but what if he had 1000 chances ? Then he would be a good goal scorer but not a clinical finisher.