Brooks Koepka and Jordan Spieth have been regulars in PGA DFS lineups for years, but daily Fantasy golf players will have to decide if they can be trusted when they set their PGA DFS strategy for the 2021 AT&T Byron Nelson, which tees off on Thursday. Spieth, who's among the highest priced players on both DraftKings and FanDuel, enters this week's event full of confidence, having finished inside the top-five in five of his last seven starts. However, Spieth has not played in a PGA Tour event in four weeks, which means he could be dealing with a bit of rust.

Koepka, whose PGA DFS price is $9,900 on DraftKings and $11,300 on FanDuel, missed the cut at the Masters in his last start. However, Koepka has finished T-2 or better in two of his last four starts on the PGA Tour. Can those household names be relied on as PGA DFS picks this week? Or is it time to fade them in favor of players with a significantly lower price tag? Before you enter any PGA DFS tournaments or cash games for the 2021 AT&T Byron Nelson, you'll want to see the top PGA DFS picks and daily Fantasy golf advice from SportsLine's Mike McClure.

McClure is a DFS pro with nearly $2 million in career winnings, and he's been red-hot on his PGA Tour picks this season. McClure is also a predictive data engineer at SportsLine who uses a powerful prediction model that simulates every tournament 10,000 times, taking factors like statistical trends, past results and current form into account. This allows him to find the best PGA DFS values and create optimal lineups that he shares only over at SportsLine. They're a must-see for any PGA DFS player.

Last week at the Wells Fargo Championship, McClure included Viktor Hovland as one of his top PGA DFS picks. The result: Hovland secured a third-place finish, returning over 95 points on FanDuel. Anybody who had him in their lineup was well on the way to a profitable weekend.

In addition, McClure's model is up almost $10,000 on its best bets since the restart, nailing tournament after tournament. This is the same model that has nailed a whopping six majors entering the weekend. Anyone who has followed it has seen massive returns.

Now, McClure has set his sights on the 2021 AT&T Byron Nelson and revealed his optimal PGA DFS advice, strategy and player pool. Head to SportsLine now to see his top daily Fantasy golf picks for the 2021 AT&T Byron Nelson.

One of McClure's top PGA DFS picks for the AT&T Byron Nelson 2021 is Carlos Ortiz at $7,800 on DraftKings and $9,900 on FanDuel.

Ortiz is a long ball hitter who's averaging 303 yards per drive this season, which ranks 45th on the PGA Tour. His ability to drive the ball deep into the fairway allows Ortiz to use his short irons to approach the green. That lethal combination has helped him hit over 67 percent of greens in regulation this season, which has helped him rack up 229 birdies in 56 rounds. Ortiz is a complete steal at this price point, so lock him in your PGA DFS lineups and look for a big return at TPC Craig Ranch.

McClure's optimal PGA DFS strategy also includes rostering Jon Rahm at $11,000 on DraftKings and $12,200 on FanDuel.

Rahm, who's finished inside the top-10 in nine of his last 12 PGA Tour events, is an almost sure-fire bet to be near the top of the leaderboard come Sunday. The 26-year-old has been extremely consistent this season, and he'll enter this week's event ranked fifth on the PGA Tour in greens in regulation percentage (72.22) and ninth in scoring average (69.960), which makes him an extremely valuable PGA DFS asset.

McClure is also targeting an undervalued player who's primed to play extremely well this week, giving you a huge return on sites like DraftKings and FanDuel. Picks like these could be the difference between winning your PGA DFS contests or going home with nothing. You can only see who it is here.

So what are the top PGA DFS picks for the 2021 AT&T Byron Nelson? And which undervalued golfer is a must-roster? Visit SportsLine now to see the complete player pool for FanDuel and DraftKings, all from the expert who's made nearly $2 million in daily fantasy sports, and find out.