This is obviously his natural motion and would be a mistake to try to change. A vertical arm swing worked pretty well for Jack Nicklaus, Davis Love III, Fred Couples, Jim Furyk, Ray Floyd and Tom ...

Going into the move, remember that a swing is nothing more than a hip thrust in a vertical position ... overhand grip on the horns (or handles), arm extended straight down in front of you.

So why is he tweaking his golf swing? Because that's what top players ... "When the club gets too vertical my right arm stays high, and that's what causes the cupped and across look," McIlroy ...