Louis Oosthuizen enters the final round with a one-shot lead at the 2021 Open Championship. Oosthuizen shot a 69 on Saturday to get to -12 and while Collin Morikawa is in second place at -11 while Jordan Spieth sits third and is three shots back at -9. Oosthuizen is a 3-2 favorite in the live 2021 Open Championship odds from William Hill Sportsbook while Morikawa is at 2-1 and Spieth is at 5-1.

We simulated the final round of the 2021 Open 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 in June. In fact, it's up over $8,000 on its best bets since the restart, nailing tournament after tournament.

At the 2021 U.S. Open, McClure's model was all over Jon Rahm's first career major championship victory at 10-1 from the start. Rahm was two strokes off the lead heading into the weekend, but the model still projected him as the winner. And at the 2021 Masters, McClure nailed Rahm's (+250) top-five finish in his best bets, 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 several months.

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

One major surprise the model is calling for at the 2021 Open Championship: Spieth, a three-time major champion and one of the top Vegas favorites, stumbles and fails to win his second Claret Jug. Another surprise: Jon Rahm, a 16-1 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 SIX other golfers with odds longer than 18-1 who will make surprising runs, including an EPIC underdog! Anyone who backs these long shots could hit it BIG.

So who wins the 2021 Open 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 Open Championship, and see which long shots make a run at the title, all from the model that is up over $8,000 on PGA picks since the restart!