John Daly never won the Masters. And he was having problems well before he won the PGA… or the British Open.
Golf is almost entirely physical. You have to be world-class physically before your mental game can even matter. If you're not world class physically, you'll never even GET to the PGA Tour.
And you need to be a 6.5-index physically before you shoot like a 6.5 index. If you blow up in tournaments, yeah, you've got some mental work to do… but you're still a 6.5 index because of how you swing and hit the ball and putt and chip, etc.
Between peers, the mental game is a sliver of a separator. But sometimes at the highest level that's all it takes. Other times, you can be so good physically (see also Dustin Johnson) that you can be a stooge and still win.
I admit, it's mostly a memory from me, but I'll ask my Dad his name to google him. But the thought still remains, aren't there a lot of guys that can routinely throw up mid sixties in tournament conditions on varied courses, but still can't ever get anything going on the Web.com? Maybe the guy I am recalling was a head case, but my guess would have been there's a crapload of these same head cases that are trying to qualify for either the web.com or pga.
Is John Daly's success and problems physical or mental? I'm thinking particularly after he won the masters.