The teams have not yet been finalized, but the Americans are officially favorites for next month's Ryder Cup.
The Westgate Las Vegas Superbook opened betting on the biennial matches on Wednesday, listing the U.S. as -160 favorites, meaning that a bettor has to shell out $160 for every $100 he hopes to win. The Europeans, meanwhile, opened as +170 underdogs, meaning a $100 bet would return $170 in profit.
Betting on the exact outcome of a 14-14 tie at Hazeltine, a scenario that would allow the Europeans to retain the trophy, can be done at 11-to-1 odds.
The automatic qualification period will end after The Barclays this week. Five players have already clinched spots for the U.S.: Dustin Johnson, Jordan Spieth, Phil Mickelson, Jimmy Walker and Brooks Koepka. The final automatic spots are currently held by Brandt Snedeker, Zach Johnson and Patrick Reed.
The nine players who qualified automatically for the European team were determined last week. Captain Darren Clarke will add three selections on Aug. 30 to a roster that will include Rory McIlroy, Henrik Stenson, Danny Willett, Chris Wood, Rafael Cabrera-Bello, Sergio Garcia, Justin Rose, Andy Sullivan and Matthew Fitzpatrick.
Davis Love III will make three captain's picks on Sept. 12, with his final pick announced Sept. 25. The Ryder Cup will be held Sept. 30-Oct. 2 in Chaska, Minn.