That headline is not a joke. You can bet on pretty much every detail of the Rory McIlroy-Caroline Wozniacki wedding short of "how much alcohol will be consumed at the bachelor party" (and I'm not totally sure why you can't bet on that).
McIlroy and Wozniacki announced their engagement to kick off 2014 and now are in wedding-planning mode.
Here's a list of bets you can make according to Betting Pro.
When the wedding will take place
2016 or later: 6-1
Where the wedding will be
Who will design Wozniacki's dress
Monique Lhullier: 5-1
Vera Wang: 6-1
Baby by end of 2015: 5-4
Holly Sweeney (McIlroy's ex) to be a guest at wedding: 7-4
McIlroy to win a major before wedding: 9-4
Like I said, these are incredible. That "Nike will design Wozniacki's dress at 500-1" is the crown jewel.
Oh, and give me $100 on 2015, Denmark, and Wang.