Before you set your PGA DFS lineups on sites like DraftKings and FanDuel for the 2019 British Open, also known as the Open Championship, you need to hear what Mike McClure has to say. McClure is a DFS pro with nearly $2 million in career winnings, and he’s been red-hot on his PGA Tour DFS 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 at SportsLine. They’re a must-see for any golf DFS player.

Earlier this season at the U.S. Open, McClure rostered Gary Woodland on DraftKings. The result: Woodland fired four consecutive rounds in the 60s on his way to a score of 13-under and a career-defining win. Anybody who had him in their lineup was well on their way to a huge weekend.

Now, McClure has set his sights on Royal Portrush and revealed his optimal Open Championship DFS lineups. You can only see them at SportsLine.

One player McClure is rostering at Royal Portrush: Adam Scott ($10,500 on FanDuel, $8,800 on DraftKings), who’s finished in the top 10 in three consecutive starts. He’s an almost sure-fire bet to be near the top of the Open Championship leaderboard come Sunday.

The 38-year old Australian has shown he can compete in the world’s marquee tournaments as evidenced by his 2013 Masters win and the fact that he’s finished fourth or better in every other major, including a second-place performance at the 2012 Open Championship. He’s also had multiple impressive performances this season on tour, finishing in the top 10 six times already.

McClure’s optimal Open Championship DFS strategy also includes rostering Jason Day at $10,400 on FanDuel and $8,600 on DraftKings.

Day, the 2015 PGA Championship winner, has recorded six top-10 finishes this season and returned over 6x value on DraftKings in five of his last seven starts on the PGA Tour. The 31-year-old enters the final major of the year hitting the ball extremely well off the tee, averaging over 300 yards per drive. His ability to drive the ball deep into the fairway allows him to use his short irons to approach the green. That lethal combination has allowed Day to hit over 70 percent of greens in regulation, which should allow him to rack up plenty of points on DraftKings and FanDuel at Royal Portrush. Lock him in your PGA DFS lineup and look for a tournament-winning return this week at the Open Championship.

McClure is also targeting an undervalued player who’s primed to blow up at Royal Portrush, giving you a huge return on both sites. Picks like these could be the difference between winning your PGA DFS contests or going home with nothing.

So what British Open DFS lineup should you enter on DraftKings or FanDuel? And which undervalued golfer is a must-roster? Visit SportsLine now to see the complete optimal tournament lineups for FanDuel and DraftKings, all from the man who’s made nearly $2 million in daily fantasy sports, and find out.