Phil Mickelson sits atop the leaderboard heading into the final round of the 2021 PGA Championship. With a victory at Kiawah Island, Mickelson will become the oldest major winner (50) in golf history. Mickelson is seven-under par heading into Sunday's final round, one shot ahead of Brooks Koepka. Koepka, a four-time major champion, is the 3/2 favorite at William Hill Sportsbook, followed by Mickelson (3-1) and Louis Oosthuizen (6-1). 

We simulated the final round of the 2021 PGA Championship 10,000 times, and there are some MAJOR surprises.

Our proprietary model, built by DFS pro Mike McClure, has been RED-HOT since the PGA Tour resumed last June. In fact, it's up almost $10,000 on its best bets since the restart, nailing tournament after tournament.

At the Masters in April, McClure nailed Jon Rahm's (+250) top-five finish, as well as Corey Conners' (+550) top-10 showing. McClure's best bets netted over $450 at the Masters.

In addition, McClure was all over Daniel Berger's win at +1400 in his best bets at the AT&T Pebble Beach Pro-Am in February. McClure also nailed Viktor Hovland's (+2500) victory in the Mayakoba Golf Classic in December. That was one of many huge calls he's made in the past few months.

This same model has nailed a whopping six majors entering the weekend. Anyone who has followed it has seen MASSIVE returns!

One major surprise the model is calling for at the 2021 PGA Championship: Mickelson, a five-time major champion and the leader heading into Sunday's final round, stumbles and barely cracks the top five! Another surprise: Joaquin Niemann, a massive 33-1 long shot, makes a strong run at the title. He's a target for anyone looking for a HUGE payday.

Also, the model is targeting THREE OTHER golfers with odds longer than 33-1 who will make a surprising run, including two EPIC long shots who will finish near the top of the leaderboard! Anyone who backs these underdogs could hit it BIG.

So who wins the 2021 PGA Championship? And which HUGE long shots are a MUST-BACK? ... Join SportsLine right now to see who you can bank on to win the 2021 PGA Championship, and see which long shots make a run at the title, all from the model that is up almost $10,000 on PGA picks since the restart!