Will Scottie Scheffler win the grand slam before 2028?

This market is not about Scheffler completing the career Grand Slam; it requires him to win all four majors in the same calendar year before 2028. Since he did not do that in 2026 and the majors for that year are effectively done, the only path left is a perfect 2027. Even for the best player in the world, that is a brutally narrow path because it requires not just elite form, but four separate weeks of surviving golf’s deepest fields, difficult course setups, and high variance in putting and short-game outcomes.

The case for Yes is that Scheffler remains the most credible active player for an unprecedented run. He has stayed remarkably consistent, continues to be priced as a top contender in every major, and has shown he can contend under major pressure. If any player were to have a once-in-a-generation season where several major fields break his way, it would be him.

Even so, the market looks too optimistic at 4% to 6%. That price feels more appropriate for a player winning one or even two majors in a year, not sweeping all four, and it likely reflects how close he has come to the career Grand Slam rather than the much harder calendar-year version. My estimate is closer to 2%, because the event is essentially a one-year, four-lock parlay on the best golfer in the world, and golf still produces too much week-to-week randomness for that to be a multi-percent proposition.