Will Scottie Scheffler win the grand slam before 2028?

Scheffler is already one of the most dominant players of his era, and that matters because career grand slams are usually reserved for players with repeated major-winning ability rather than one-off brilliance. If he already has multiple majors and remains in his prime through 2027, the path is straightforward in concept: win the U.S. Open and the Open Championship, or at least one of them if he has already added one since the latest available context. The fact that he is still young enough and elite enough to contend in majors every season gives this outcome non-trivial plausibility.

The main reason this is still a long shot is that the grand slam is an exceptionally narrow target on a very short clock. Even historically great players often fail to complete it because one or two specific majors never break their way, and the U.S. Open and Open Championship are notoriously volatile due to course setup, weather, and field depth. Scheffler does not just need to keep playing well; he needs one or two specific results in a window of only a handful of major tournaments before the event expires.

Against the market, 5% feels too low for a player of Scheffler’s caliber. A player this dominant probably has a better-than-coin-flip chance of winning at least one of the remaining majors over the next few years, and a meaningful chance of getting the second one as well. Still, the combination of limited time, the difficulty of the remaining majors, and the fact that even all-time greats frequently miss the grand slam means this should not be priced like a moderate-probability event.