I know what SG is, but what I don't know is what data it's based on.
So someone hits it off the tee (400 yards from the hole) and they are 80 yards away in the rough. Do they get the same SG applied to that shot at the PGA championship as they would to the same numbers at the Rocket Mortgage?
I believe that's what they do. There's a table that says 400 yards, tee box, 4.03 shots. 399 yards, tee box, 4.02 shots etc. They don't reload the data for ever week or every venue.
If so, SG is flawed. Especially at a major when the test is set up that much stiffer with firmer greens especially. The firm greens massively placed the emphasis on accuracy as you had to be not only in the fairway, but on the correct side of the fairway. As we saw with Brooks, bomb and gouge wasn't an effective strategy.
Also - Morikawa won by 3 shots, so that was 2 putts he didn't actually have to make that just gave him a cushion.
You're way off. It's calculated per round, per event, in comparison with the rest of the field on that day
Also, he only won by two ??