2017 British Open Betting Preview: Dustin Johnson, Jordan Spieth Odds, Analysis

There is no single-digit betting favorite for the 146th edition of The Open Championship this week at Royal Birkdale Golf Club in Southport, England. Also known as the British Open, the tournament has long been known as the most difficult major tournament to win on the PGA Tour due to often rough course conditions.

This year, a pair of Americans, Dustin Johnson and Jordan Spieth, are listed as +1400 co-favorites or 14/1 (bet $100 to win $1400) at sportsbooks monitored by OddsShark.

Johnson was listed as +750 chalk for the U.S. Open and missed the cut. Regardless of his recent struggles, Johnson still ranks No. 1 on this year's PGA Money List with more than $6.3 million.

Johnson has actually missed the cut in each of his last two tourneys and did not place in the top 10 in the previous two before that after tying for second in the Wells Fargo Championship in early May. He has three wins overall this season.

Spieth has just two wins on the tour this year, but he has matched Johnson with six top-10 finishes and made the cut in 12-of-16 tourneys entered. He is coming off a big victory in the Travelers Championship at the end of last month, edging Daniel Berger in a playoff.

Neither Spieth nor Johnson has ever won the British Open, with the latter tying for second in 2011. Spieth's best finish was a tie for fourth two years ago.

The defending champion is Sweden's Henrik Stenson, and he looks like a bargain at +2500 on the British Open odds. Stenson set a record last year by shooting 20 under par to win by three strokes over American Phil Mickelson.

However, Stenson has struggled mightily on the tour in 2017, missing the cut in four of the past five tourneys he has entered.

Between the co-favorites and Stenson on the betting board are seven golfers, including Rickie Fowler (+1600), Jon Rahm (+1600), Sergio Garcia (+1800), Justin Rose (+2000), Rory McIlroy (+2000), Hideki Matsuyama (+2000) and Tommy Fleetwood (+2200).

Of that group, McIlroy is the only previous winner (2014), with Fowler and Garcia tying for second that year. Mickelson won it the year before, and he is a +4000 long shot at sports betting sites.