There are exclusive "clubs" on the PGA Tour.
There are only four majors each year. There are only five players to complete the career grand slam in the modern era.
But there are only three players to record two holes-in-one in the same round on the PGA Tour.
Bill Whedon, 1955 Insurance City Open, first round
While the next two golfers were pros for their historic days, Whedon was an amateur in 1955 at Wethersfield Country Club. In what is now the Travelers Championship, Whedon first aced the 168-yard No. 5. He later had a hole-in-one on the 208-yard No. 9.
As reported by the Hartfort Courant in 2014, Whedon had "THIO" on his Saab.
THIO: Two Holes In One.
Whedon bogeyed the first four holes before making history. On his second ace, Whedeon said it was so hazy that no one could tell where the ball went after his shot.
When it was clear Whedon made ace -- again -- his wife, Polly, ran up to him.
"Those hole-in-ones are in my memory forever," Whedon said, as reported by the Hartford Courant.
Sam Snead was the winner of the 1955 Insurance City Open.
Yusaku Miyazato, 2006 Reno-Tahoe Open, second round
Miyazato became the second player to make two aces in the same round on the PGA Tour at what is now the Barracuda Championship.
He had holes-in-one on the 230-yard No. 7 and the 173-yard No. 12 at Montreux Golf and Country Club.
Miyazato had a plan to celebrate after his special day.
"Drink much beer. Big party," he said through his caddie as translator.
Brian Harman, 2015 The Barclays, fourth round
Harman is the most recent addition to this small club. On Sunday, August 30, Harman recorded two holes-in-one at Plainfield Country Club. First, he aced the No. 3. He then had another ace on the 228-yard No. 14.
The two holes-in-one were part of a wild Sunday for Harman. He shot 2-under for the round, as he also had three birdies and five bogeys. Even with the help of his two aces, Harman only matched his Friday round of 68. At the end of the tournament, Harman finished 2-under and tied for 30th. Jason Day won The Barclays at 19-under.
Though Harman shows off a big smile after the second ace, even he's probably a little in shock.
Tradition goes that the player who makes the hole-in-one buys the drinks.
"It was a bad, bad day to do it," Harman said, according to ESPN. "All of us are going into (New York City) tonight. I would have much rather had it yesterday."