What’s not surprising about the betting odds for this weekend’s PGA Championship at Whistling Straits is that Jordan Spieth is the favorite. What is surprising, though, is who is right behind him.

With Spieth on the board at 11/2, it’s Rory McIlroy in second at 10/1. That seems pretty generous considering that McIlroy hasn’t played a competitive round of golf since early July, when he suffered an ankle injury.

This is the third time this year that Spieth and McIlroy have occupied the top spots on the board. McIlroy was listed as the favorite before both the Masters and U.S. Open, and both of course were won by Spieth. If Spieth lives up to the prediction, he will complete the American Grand Slam this year — the first to ever do that.

According to vegasinsider.com, the long layoff for McIlroy has only slightly hurt his odds. He reportedly opened the summer at 8/1 odds to win his second Wanamaker Trophy in a row.

Dustin Johnson is listed at 13/1 odds to shake off his bugaboos at majors and get his first win at one of golf’s biggest events. A win this weekend would be fitting, as Whistling Straits is the site where he inadvertently grounded his club in a bunker and was assessed a two-stroke penalty that took him from winning the event to missing the three-hole playoff.

Zach Johnson, winner of last month’s Open Championship, is listed at 50/1 odds. That’s behind both Phil Mickelson and Tiger Woods, who each have 30/1 odds.

Darren Clarke has the worst odds (not including the not-listed 20 PGA Professionals who will be in the field) going off at 1,000/1.

Take a look at the full list below:

• Jordan Spieth 11/2
• Rory McIlroy 10/1
• Dustin Johnson 13/1
• Adam Scott 15/1
• Jason Day 15/1
• Bubba Watson 22/1
• Justin Rose 22/1
• Rickie Fowler 22/1
• Henrik Stenson 30/1
• Phil Mickelson 30/1
• Tiger Woods 30/1
• Brooks Koepka 40/1
• Louis Oosthuizen 40/1
• Sergio Garcia 45/1
• Hideki Matsuyama 50/1
• Martin Kaymer 50/1
• Matt Kuchar 50/1
• Zach Johnson 50/1
• Brandt Snedeker 55/1
• Jimmy Walker 55/1
• Patrick Reed 55/1
• Jim Furyk 60/1
• Billy Horschel 65/1
• Charl Schwartzel 65/1
• JB Holmes 65/1
• Keegan Bradley 65/1
• Paul Casey 65/1
• Bill Haas 80/1
• Branden Grace 85/1
• Marc Leishman 85/1
• Danny Willett 90/1
• Danny Lee 100/1
• David Lingmerth 100/1
• Jason Dufner 100/1
• Justin Thomas 100/1
• Kevin Kisner 100/1
• Lee Westwood 100/1
• Luke Donald 100/1
• Ryan Moore 100/1
• Shane Lowry 100/1
• Francesco Molinari 115/1
• Graeme McDowell 115/1
• Hunter Mahan 115/1
• Ian Poulter 115/1
• Steve Stricker 115/1
• Victor Dubuisson 115/1
• Webb Simpson 115/1
• Charley Hoffman 135/1
• Bernd Wiesberger 150/1
• Brendon Todd 150/1
• Byeong-Hun An 150/1
• Camilo Villegas 150/1
• Gary Woodland 150/1
• Geoff Ogilvy 150/1
• Graham DeLaet 150/1
• Jamie Donaldson 150/1
• Kevin Chappell 150/1
• Kevin Na 150/1
• Nick Watney 150/1
• Robert Streb 150/1
• Russell Henley 150/1
• Ryan Palmer 150/1
• Brendon de Jonge 175/1
• Ernie Els 175/1
• Harris English 175/1
• John Senden 175/1
• Matt Jones 175/1
• Padraig Harrington 175/1
• Tommy Fleetwood 175/1
• Tony Finau 175/1
• Angel Cabrera 200/1
• Jason Bohn 200/1
• Ben Martin 225/1
• Daniel Berger 225/1
• Jonas Blixt 225/1
• Kevin Streelman 225/1
• Marc Warren 225/1
• Miguel Angel Jimenez 225/1
• Russell Knox 225/1
• Scott Piercy 225/1
• Steven Bowditch 225/1
• David Toms 250/1
• Boo Weekley 275/1
• Cameron Tringale 275/1
• James Hahn 275/1
• Sang-Moon Bae 275/1
• Shawn Stefani 275/1
• Stephen Gallacher 275/1
• Thomas Bjorn 275/1
• YE Yang 300/1
• Alex Cejka 350/1
• Matt Every 350/1
• Vijay Singh 350/1
• Colin Montgomerie 500/1
• John Daly 500/1
• Mikko Ilonen 500/1
• Nick Taylor 500/1
• Darren Clarke 1,000/1