There was an episode of M*A*S*H, where in saving a soldier's arm from amputation, Winchester's surgery rendered the right hand of the soldier, a concert pianist back in the World, useless. Regardless, Winchester keep referring to his ability in the present tense, culminating with, "I have hands...I can play the notes, but I cannot make music."
Alas, talent can get one only so far. Professional athletes (musicians, artists, etc. Anyone who makes a living at a "hobby.") are nearly sociopathic in their passion and dedication to their singular goal, and few (if any) things are prioritized over achieving it. Weekend warrior have a day job. Weekend warriors play. This is a professional athlete's day job. They are working.
MLB hitters hit 15 balls a piece during pregame batting practice. Fans don't see the triple digit number of balls they've already seen that day, before the gates open.
Larry Bird would shoot 500 jump shots and make 99 consecutive free throws before sunrise, and then go to work on strength and conditioning...before practice.
I believe it was Brianna Stewart who once described a "Geno philosophy (In quotes only because I don't believe he was the first to come up with it)," where they don't stop practicing when they get a play right. They keep practicing until they can't get the play wrong.
Similarly, Tom Brady said after the Patriots comeback Super Bowl win over the Falcons, “I have the answers to the test now. You can’t surprise me on defense. I’ve seen it all. I’ve processed 261 games, I’ve played them all."
And finally, to bring it back to golf, which is what 90% of this thread's posts seem to reference, The Travelers Championship Pro-Am is probably at least the fourth time around the course, in various forms, for most of the golfers, not counting the hours on the practice green or chipping area. They aren't messing around. They are setting up and practicing scenarios.
That is the difference between Joe Montana and Joe sick-pack.
The difference between Derek Jeter and Enrique Wilson is quite a bit more subtle, as they both can recognize a curveball by pitcher's grip and spin. They could both process the information they saw in a split second. They both can probably still throw a frozen rope 200 feet with pace. Whether it was physical ability or mental awareness, one was better equipped/prepared than the other.