That's what is on the line this week at the 2025 Open Championship as Royal Portrush hosts the final major of the season in Northern Ireland. Returning to the par 71 for the first time since 2019 -- only the third time The Open has ever been held outside of Scotland or England -- the R&A has set up a tournament that will do its best to identify the man most equipped to deal with the elements and emotional toll one experiences across four rounds of major championship golf.

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 Open has had 28 different winners aged 38 or older all-time, the same number as the Masters and U.S. Open combined.