LOUISVILLE, Ky. -- Either you're in or you're out. Because if what happened here during the final round of the Mud Bowl, er, PGA Championship, doesn't convince you that golf can survive with or without Tiger Woods, then nothing will.
This was the best major of the year, the best PGA Championship in, well, decades, and the best majors drama production we've seen since "Mickelson and Muirfield -- A 2013 Love Story," or "Limping In San Diego -- Tiger and the 2008 U.S. Open."
Excuse me, I'm going to need a moment ...
It isn't every day that you watch somebody win a Claret Jug in July and a Wanamaker Trophy in August. It isn't every day that you see a guy win his fourth career major. Or have an era named after him.
But that's what Rory McIlroy, all 25 years of him, has done in the past 22 days. He has redefined the way we should look at pro golf. He has single-handedly freed the sport from inertia.
"To be the face of golf -- or one of the faces of golf -- it's a big responsibility," said McIlroy. "But at the same time, I feel like I'm up to the task of handling it well."
Admittedly he got an assist from the PGA Championship, a major that rarely gets top billing. If the Masters, U.S. Open and the Open Championship are the filet mignons of the majors, the PGA Championship is often considered the Bearnaise sauce.
Not Sunday, it wasn't. This was a PGA Championship final round that had everything: Amazon jungle rainfall, delays, birdies, eagles, lead changes, swamp butt, more birdies and eagles, darkness and then controversy.
Most of all it had McIlroy, who has won his four majors in the past three years and two in a single season. He's 13 years younger than Woods, who is stuck on 14 majors, and nearly 50 years younger than the great Jack Nicklaus, who won his 18th and final major in 1986. In other words, he has a chance to finish ahead of both legends.
McIlroy isn't just collecting trophies; he's making golf relevant again. Or he should be.
He wins big. He wins small. He wins here. He wins over there. He wins sublimely. He wins boringly. But he wins. And if Woods and Nicklaus have proved anything over the years, winning matters.
"It's beginning to look a little Tiger-esque, I suppose," said fellow Northern Irishman Graeme McDowell. "I said to [reporters] at the Open, I didn't think we were going to see the new Tiger era, as in someone creating their own kind of Tiger-esque era just yet. I guess you could say -- I'm not eating my words, but I'm certainly starting to chew on them right now."
Chew on these numbers: McIlroy has won four majors before his 26th birthday.
"So it's a case of how the guy continues to motivate himself," said McDowell. "You don't know what the number is. It's however many he wants, you know. He'll win as many majors as he wants -- within reason."
There is a humility to McIlroy, an accessibility. He has committed his share of off-course sins, but immediately owned them. He has just the right amount of edge. And like Woods, Nicklaus and the man he defeated by 1 shot Sunday -- Phil Mickelson -- he does things that defy physics and explanation.