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It's a familiar tournament, but the course will be a new challenge when many of the PGA Tour's top players tee off Thursday in the 2021 AT&T Byron Nelson at TPC Craig Ranch outside Dallas. It is the final event before next week's PGA Championship at Kiawah Island, so the field is loaded at the top. World No. 3 Jon Rahm, reigning U.S. Open champion Bryson DeChambeau and multiple major winners Jordan Spieth and Brooks Koepka are among the stars in the 2021 AT&T Byron Nelson field. William Hill Sportsbook lists Rahm and DeChambeau as the 8-1 co-favorites in its latest 2021 AT&T Byron Nelson odds. Spieth is at 12-1, while Koepka is a longer shot at 22-1.        

Will Dallas residents Spieth and DeChambeau have any sort of advantage that should earn them a spot among your 2021 AT&T Byron Nelson Fantasy golf picks? Would a young star like Will Zalatoris (28-1) or Sam Burns (33-1) offer better value? Before you make any 2021 AT&T Byron Nelson Fantasy golf picks, check out the latest Fantasy golf rankings from data scientist Rick Gehman

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 12 outright winners in the past 18 months and three this season, including Viktor Hovland at 25-1 at the Mayakoba Golf Classic and Daniel Berger at 20-1 at Pebble Beach. 

Last week at Quail Hollow, four of Gehman's top 14 golfers finished in the top 10, including Rory McIlroy, who won the event for the third time to break an 18-month victory drought.

"While his recent results have been subpar, it would be no surprise for McIlroy to find success at Quail Hollow, where he is the only two-time champion," Gehman told SportsLine before the event.

Gehman has been on fire all season. At the Zurich Classic team event in New Orleans last month, five of Gehman's top eight finished T-8 or higher, including Louis Oosthuizen and Charl Schwartzel, who lost in a playoff.

At the Masters, three of Gehman's top eight picks finished in the top five. That included Spieth and Xander Schauffele, who tied for third. Three of his top seven at The Players made the top 10, and at Pebble Beach, three of his top four had top-five finishes. Anyone who has followed his advice has cashed in huge.

Now, Gehman, co-host of "The First Cut" podcast on CBS Sports, has revealed his top 30 players for the AT&T Byron Nelson 2021 over at SportsLine so you can crush your Fantasy golf picks

2021 AT&T Byron Nelson Fantasy golf picks

Spieth has been on a tear, and Gehman expects that upswing to continue in his hometown event. The 27-year-old has won three majors, and he is trying to get locked in before going for the career Grand Slam next week. Spieth has finished in the top five in five of his past seven full-field events, and he comes off a T-3 finish at the Masters that followed his win at the Valero Texas Open last month. His stats are still catching up to his success this season, but he is 68 under par over his last seven tournaments.   

On the other hand, Gehman is slightly fading DeChambeau, who is the co-favorite. The 27-year-old nearly missed the cut last week, and even flew home thinking he had, but stormed back to tie for ninth. He tied for 46th at the Masters in his previous event, and his shots haven't always been on the mark. He is 166th on tour in driving accuracy and 66th in greens in regulation and struggled mightily at times last week. He clearly can overpower any course, but the field offers better options, and Gehman suggests looking elsewhere for value.

How to set your 2021 AT&T Byron Nelson Fantasy golf lineups

Instead, the golf analyst is backing a huge long-shot who comes in higher than 50-1, but isn't far removed from a stellar stretch of golf. Gehman is only sharing who it is, and his top 30 golfers in order, right here

Who wins the AT&T Byron Nelson 2021? Who are the top golfers to target? And which overlooked player can help you win your league this week? Visit SportsLine now to get Rick Gehman's Fantasy golf rankings, all from the data scientist who's called 12 outright winners in the past 18 months.