That distinction belongs to world No. 1 and reigning PGA champion Scottie Scheffler. Masters — and Grand Slam — champ McIlroy is a clear second choice, with Jon Rahm, who has three top-10s in his last four Open starts, third.

The world's top pro golfers compete at the 2025 season's final major tournament at Royal Portrush Golf Club's Dunluce Course in County Antrim, Northern Ireland. That includes the event's favorites Scottie Scheffler and this year's Masters champion Rory McIlroy, as well as the Open's defending champion Xander Schauffele.

At rainy Royal Portrush, caddies shield golf balls, not players. Learn why, and how water changes shots and spin in wet conditions.

Open Championship returns to Royal Portrush in Northern Ireland, the site of Shane Lowry's triumph in 2019. As has been the case all year, the strong favorites entering the tournament are Scottie Scheffler (9/2) and Rory McIlroy (7-1).

Our Open Championship best bets and predictions call for an undervalued winner this weekend at Royal Portrush.