The PGA Tour season is on the final stretch run to the FedEx Cup playoffs, and a handful of marquee names will compete with a hungry field at the 2021 3M Open this week. Dustin Johnson and Louis Oosthuizen head a field that will expect to score low at TPC Twin Cities in Blaine, Minn.  

Johnson is the 7-1 favorite in the latest 2021 3M Open odds from William Hill Sportsbook. Other top players in the 2021 3M Open field include Tony Finau (14-1), Louis Oosthuizen (14-1) and Patrick Reed (18-1).

Before you consider your 2021 3M Open picks or PGA Tour predictions, you MUST see who golf insider Sal Johnson is backing.

A media legend and consummate golf insider, Johnson knows what it takes to win and how players fit the courses. Before the British Open, the expert pegged Collin Morikawa among his players who were a good fit for Royal St. George's.

"Forget the notion that (young players) can't win because this is their first Open start," Johnson told SportsLine before the major championship. He also touted Morikawa as the best ball-striker in the field and said "he just has to overcome his poor putting." 

He did just that, showing no signs of the major championship pressure with several par saves during a bogey-free 66 on the final day. The 24-year-old held off three-time major winner Jordan Spieth to win for the second time in a major championship debut.   

Johnson also has a strong feel for when momentum will propel a player to victory. Before the U.S. Open, he tabbed Jon Rahm among his best bets to win and touted Oosthuizen at 45-1 as his top long-shot candidate. Rahm and Oosthuizen battled to the finish, with Rahm surging to his first major title.

Johnson has been on fire all season! Before the Memorial, he had Rahm and Morikawa listed among his best bets. Rahm had a six-stroke lead after the third round but had to withdraw, and Morikawa  dueled to the  end with Patrick Cantlay before falling in a playoff. Anyone who has followed Johnson's advice has cashed in HUGE!  

Now Johnson, the first producer of "Inside the PGA Tour," a longtime ABC Sports golf producer who worked with Jack Nicklaus, Arnold Palmer and Greg Norman, and the founder of the world's top golf stats database, has released his highly confident 2021 3M Open picks, and they will surprise you.

Shockingly, the golf expert is slightly fading Tony Finau, even though he is one of the favorites! The 31-year-old tied for third last year in Minnesota but finished T-23 in 2019. His 2021 season has been just as unpredictable, and Johnson doesn't have him among his top contenders!

Johnson is backing a MASSIVE long shot who comes in at around 50-1 odds for the 2021 3M Open. This veteran has several top-10 finishes this season and could exploit the weaker field and pull off a SHOCKING victory! Anyone who backs this underdog could cash in HUGE!

Who wins the 2021 3M Open? Where do Dustin Johnson and Louis Oosthuizen finish? And which MONSTER long shot is a MUST-BACK? ... Join SportsLine now to see Sal Johnson's full leaderboard and picks for the 2021 3M Open, all from the insider who knows how to win on the PGA Tour!