The British Open is back, and the historic major championship will be played on British soil for the first time since 2017 when it tees off Thursday at Royal St. George's in Sandwich, England.

William Hill Sportsbook lists Jon Rahm as the 7-1 favorite in its latest 2021 Open Championship odds, followed by Bryson DeChambeau (14-1) and Dustin Johnson (15-1). Before you lock in any of your Fantasy golf rankings or bet the 2021 British Open, you MUST see data scientist Rick Gehman's power rankings.

With his expansive database of golf statistics, course data and betting odds, Gehman creates advanced models and back-tests them constantly. These models have produced 13 outright winners in the past 18 months and four this season, including Viktor Hovland at 25-1 at the Mayakoba Golf Classic and Daniel Berger at 20-1 at Pebble Beach! 

At last week's John Deere Classic, six of Gehman's top 20 selections were in the top 11 on the final leaderboard. That included Lucas Glover, whom the golf expert pegged as a player coming in with a lot of momentum who could thrive against a weaker field.  

"Glover shot his best round of the week on Sunday in Detroit (67), which is encouraging," Gehman told SportsLine before the event. "He has two top-eight finishes in his last eight starts, and this will certainly be the weakest field during that stretch."

The result? The 2009 U.S. Open champion went out and shot a final-round 64 to win by two strokes for his first victory in more than a decade.  

Gehman has been on fire all season. At the Rocket Mortgage, eight of Gehman's selections finished in the top 15, including Cam Davis and Joaquin Niemann, who lost in a three-way playoff. And at the U.S. Open, 10 of his top 11 selections were in the top 20, with only Bryson DeChambeau failing to do so despite leading at the turn on Sunday. Anyone who has followed his advice has cashed in HUGE!

Now, Gehman has ranked his top 30 golfers for the 2021 British Open. We can tell you he's all-in behind Rahm, who is one of the few top players who come in without question marks. The Spaniard won the U.S. Open and was seventh at last week's Scottish Open in his last two starts. Winning his first major title last month could open the floodgates for a player known to have the best all-around game on tour. 

On the other hand, Gehman is fading Bryson DeChambeau, even though he is just behind Rahm among the favorites! The tour's biggest hitter hasn't finished in the top 50 at the Open Championship in three starts, missing the cut twice. And his wild driver might not play well on a links course where deep bunkers come into play for the long hitters. There are several better options for your Fantasy golf picks, and DeChambeau barely cracks Gehman's top 10. 

Instead, the golf analyst is backing a HUGE long-shot! This veteran has been in the mix at the Open Championship before and comes in looking like he is in top form. He could stun the field this week at Royal St. George's! You ABSOLUTELY need to see who it is and check out Gehman's expert analysis before you bet the 2021 British Open or enter any Fantasy golf picks.

Who wins the 2021 British Open? Which long shots should you be all over in your Fantasy golf rankings? ... Join SportsLine now to get Rick Gehman's Fantasy golf power rankings for the 2021 British Open, all from the data scientist whose models have produced four outright winners this season!