Will Scottie Scheffler win the grand slam before 2028?
Scottie Scheffler is good enough to win the missing U.S. Open before 2028, but the market is right that the event is still a low-probability long shot. My independent estimate is meaningfully higher than the current price because one elite player with repeated major contention can convert this outcome with just one breakthrough win, but it still remains unlikely.
Analysis
Scheffler has already won the other three men’s majors, so the entire question turns on whether he can win the U.S. Open before the cutoff. The recent record is mixed: he reached contention at the 2026 U.S. Open but did not close, and reporting after that event said he would have to wait at least another year to complete the career Grand Slam. He also finished the 2026 major season without a major title, which is a negative signal for near-term conversion, even though his overall level remains elite and he continues to contend frequently in major championships.
The case for Yes is that this is not a multi-step accumulation problem anymore; it is a single remaining major win, and Scheffler is still in his athletic prime and consistently among the best players in the world. Because he has already proven he can win three of the four majors, the probability is materially higher than that of a random top player who is still missing several majors. A player with Scheffler’s baseline talent and repeated top finishes can plausibly turn one strong week into the required breakthrough before 2028.
The case against Yes is stronger on timeline and event randomness. He has only one missing major, but the U.S. Open is inherently volatile, and the market must survive multiple annual opportunities without a loss of form, injury, or simply being outplayed in one week. The fact that he already failed in his first 2026 attempt means the path is narrower than it looked when he was approaching Shinnecock in peak form.
Compared with the current market price, I think the market is directionally correct to price this as a long shot, though the exact single-digit price may still slightly understate Scheffler’s true chance. My independent estimate is 11%, above the current 5% but still firmly a minority outcome, because the event is basically a bet on one of the world’s best golfers winning one specific major within a limited window rather than on a broad season-long dominance profile.
Arguments
For
- Scheffler has already won the Masters, PGA Championship, and Open Championship, so only the U.S. Open remains.
- He remains one of the strongest players in the world and regularly gives himself chances in majors.
Against
- He did not convert his 2026 U.S. Open opportunity, which shows how difficult the final step is.
- A single major win in a short remaining window is still rare even for elite players, especially under U.S. Open pressure.
Key drivers
- He only needs one more specific major to complete the set, which is a much simpler path than building a résumé from scratch.
- Scheffler remains an elite major contender with repeated top finishes and a level of play that keeps him in contention often.
Risk factors
- The cutoff is fixed and relatively short, so even a small run of bad luck, injury, or regression can eliminate the opportunity.
- The U.S. Open is a high-variance championship, and Scheffler has already failed in his first career Grand Slam attempt.
Scenarios
Best case
Scheffler gets another U.S. Open opportunity, capitalizes on it, and completes the career Grand Slam well before 2028.
Most likely
Scheffler contends in at least one more major but falls short of winning the U.S. Open before 2028, so the market resolves No.
Worst case
He never wins the U.S. Open before the cutoff, leaving the Grand Slam incomplete despite continued elite play.
More from this day
- politicsPolymarket10d
Iran leadership change by...?
AI86%MKT13%Edge+73Hidden GemThe market looks heavily tilted toward Yes because the supplied reporting already indicates that Iran’s top leadership has changed, with Mojtaba Khamenei named as supreme leader or, at minimum, the old leadership structure replaced by an interim council. The main uncertainty is definitional, but under the market’s broad language a Yes outcome is more likely than the current price suggests.
- PoliticsKalshi2y
Who will Trump pardon?
AI8%MKT51%Edge-43HypedI assess a low but nonzero chance that Barron Trump receives a presidential pardon before Jan. 21, 2029, because there is no known underlying criminal case that would make a pardon necessary. The market’s near-even price looks materially too high for a normal pardon outcome.
- PoliticsKalshi1y
2026: Trump's bad year?
AI58%MKT15%Edge+43Hidden GemI make the bear-case outcome moderately likely in 2026, at about 58%, because Trump is facing a growing stack of high-salience legal and institutional reversals rather than a single isolated controversy. The market’s 13% Yes price looks far too low if the event is defined as meaningful negative developments occurring during the year.