THere's similar things like this in other sports, like American Football. You don't tell an amazing cornerback by just counting how many passes he broke down or intercepted: You also look at how often the player he was covering was targeted at all, and compare to their baseline. When a received that is normally amazing barely gets passed to, and when he does, the plays are not very fruitful, it's the defender's fault. When it comes to easy to digest statistics, that's handled by counting passing attempts towards the defender's area.
You can do the exact same thing in soccer, if you have the data: You can assign responsibilities to players, just through computer vision. If Messi gets 3 touches in an attacking position when Sergio Ramos is defending him, you can credit that to Ramos, and compare that to Messi's touches vs the average Barcelona opponent.
You can do the exact same thing in soccer, if you have the data: You can assign responsibilities to players, just through computer vision. If Messi gets 3 touches in an attacking position when Sergio Ramos is defending him, you can credit that to Ramos, and compare that to Messi's touches vs the average Barcelona opponent.