After the month of June in which he won both the US Open and the WGC Bridgestone International, Dustin Johnson is understandably the favourite to win The Open. Up there with him though is Jason Day. Both men are best priced odds of 9/1, with Johnson the more heavily backed with 20.2 % of bets on Oddschecker, compared to Day's 15.6%
Day's form has not been quite as spectacular as Johnson's, having been tied eighth at the US Open and tied third at WGC-Bridgestone. Earlier this year, he did win the Arnold Palmer Invitational, WGC Match Play and the Players Championship. He's always there or thereabouts at majors and will be looking to follow up his PGA Championship win in 2015 with an Open win at Royal Troon.
Behind those two in the betting are the other half of the 'big four', Jordan Spieth and Rory McIlroy at 12/1 and 10/1 respectively. With Spieth finishing tied 37th and McIlroy missing the cut at the US Open, the betting interest in those two is nowhere near that of Johnson and Day, understandably, with 4% of bets on McIlroy and 6.4% on Spieth.
Going further down the field, Adam Scott has been relatively well backed at 25/1, with 2.4% of bets, as well as Branden Grace, who has received 1.8% of bets, best priced 30/1. Despite missing the cut in his last three tournaments, Henrik Stenson has received 2.2 % of bets, his best price being 33/1.
Anyone fancying Alex Noren to repeat Mickelson's feat in 2013 of doing the Scottish Open/Open double can get a massive 117/1 on Alex Noren lifting the Claret Jug on Sunday evening.