• Professional Tour player making an ace: 3,000 to 1
• Low-handicapper making an ace: 5,000 to 1
• Average player making an ace: 12,000 to 1
• Average player aceing a 200-yard hole: 150,000 to 1
• Two players in the same foursome aceing the same hole: 17 million to 1
• One player making two holes-in-one in the same round: 67 million to 1
Read more at http://www.golftoday.co.uk/golf_a_z/articles/hole_in_one.html#jE6IIk0u6uPdIhsU.99