Rory McIlroy might win this week's PGA Championship at Quail Hollow Club, where he has already won four times during his career, and he might capture a few more major championships before the end of his career.

What happens when someone like Rory McIlroy has so much of his prime remaining, with no white whale left to chase?

Three holes on Friday afternoon in 2010 as a young McIlroy just tried to make the cut might have altered the course of his career.