The U.S. Open is golf's second major of the year. All eyes will be on Erin, Wisconsin, this week, where reigning champion Dustin Johnson opened as the favorite at 13/2. 

Before you bet the U.S. Open or enter a big-time fantasy golf tournament on FanDuel or DraftKings, you'll want to listen to what the guys from SportsLine have to say. 

SportsLine's prediction model, which was built by DFS pro Mike McClure, nailed the Masters. Heading into the weekend, it called Sergio Garcia's epic playoff victory to capture his first major win after 74 starts in such events. 

SportsLine's model was all-in on Garcia despite him coming close so many times but failing to pull out the victory of his career.

Garcia opened at 20/1 in this year's U.S. Open, the same odds as Justin Rose, Rickie Fowler and Hideki Matsuyama. SportsLine is calling for a top-six finish for Garcia -- but not a victory. That's still surprising considering he hadn't won a major until the Masters in April.

With the tournament starting Thursday, SportsLine simulated the U.S. Open 10,000 times, and the results were surprising.

One shocker: Jordan Spieth, the second-biggest opening favorite at 10/1, won't crack the top 10. Spieth won the U.S. Open and Masters two years ago, but SportsLine doesn't think the former No. 1-ranked golfer will contend.

The model also is calling for a major long shot to make a run at his first major title, which could mean a big payoff.

So who wins the 2017 U.S. Open? And what massive long shot stuns the golfing world? Visit SportsLine now to see the full U.S. Open leaderboard from the model that nailed the Masters and find out.