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What Is a Hole-in-One? Odds and Famous Aces

Adair Finch7 min read

Updated July 2026

A hole-in-one — an "ace" — is holing your tee shot in a single stroke, and for an average recreational golfer the odds of doing it are commonly cited around 12,500 to 1 per attempt on a given par 3. A scratch or low-handicap player shortens that to somewhere near 5,000 to 1, and a PGA Tour pro is closer to 2,500-to-1 or 3,000-to-1, depending on which dataset you trust. None of those numbers are exact science — nobody's tracking every tee shot on every par 3 in America — but they're the standard figures the insurance and golf-industry world has settled on, and they explain why an ace still stops play on the range every time one happens.

Key Takeaways

  • Average amateur odds: roughly 12,500 to 1 per par-3 tee shot, per figures widely cited by hole-in-one insurance underwriters.
  • Low-handicap amateur odds: closer to 5,000 to 1.
  • PGA Tour pro odds: roughly 2,500 to 3,000 to 1 — better than an amateur, but still a genuine long shot even for players hitting a flag-height 7-iron for a living.
  • The National Hole-in-One Registry has reported the average ace-maker actually carries a mid-teens handicap, not a scratch card — luck matters as much as skill on a single tee shot.
  • Tradition says the golfer who makes the ace buys a round back at the clubhouse — a custom that's at least a century old and exists partly to discourage golfers from just lying about having made one.

What Actually Counts as a Hole-in-One?

Simple: your tee shot goes in the cup in one stroke, full stop. It's almost exclusively a par-3 event — reaching a par-4 or par-5 green in one is a physical impossibility for the overwhelming majority of golfers and courses, which is why the one documented PGA Tour par-4 ace (Andrew Magee, 2001 Phoenix Open, where his tee shot caromed off another player's putter and into the cup) is treated as a novelty rather than a real category. If you're new to how scoring terms stack up against each other — birdie, eagle, albatross — it's worth keeping straight that an ace on a standard par 3 is simply "one," which by definition is two strokes under par.

How Rare Is a Hole-in-One, Really?

Here's where the numbers get genuinely interesting instead of just being a stat you skim past. Insurance underwriters who price hole-in-one contest coverage — the people who have to actually be right about this, because they're on the hook for the prize money — commonly use 12,500 to 1 as the baseline for an average golfer's odds on a given par 3, and something closer to 5,000 to 1 for a strong player. On tour, pros are frequently cited at 2,500 to 1 or 3,000 to 1, which sounds like a huge gap until you remember pros are hitting far more precise wedges and short irons from tighter dispersion patterns, not driving the ball in from 220 yards.

What surprised me digging into this is the National Hole-in-One Registry's data point that the average ace-maker carries roughly a 14 handicap — not a plus-handicap club champion. That tracks with how a hole-in-one actually happens: it's not really a "skill" shot in the way a well-shaped approach is. You need a decent strike, sure, but then you need the ball to take a good bounce, catch the right slope, and drop. A mid-handicapper gets exactly as many of those bounces as anyone else over a long enough career. The Registry also reports it takes the average golfer around 24 years of play to make one, and that 60% of aces are made by golfers 50 and older — which is really just a proxy for total lifetime attempts, not late-career improvement.

Why the Pro-vs-Amateur Gap Isn't Bigger

You'd think tour-level ball-striking would make aces dramatically more common for pros than the roughly 4-5x edge the numbers show. It doesn't, because a hole-in-one isn't really about how close you get on average — it's a tail event that depends on landing angle, spin, green firmness, and pin position lining up almost perfectly. A pro's tighter dispersion helps, but it doesn't eliminate the randomness the way it does for, say, greens-in-regulation percentage.

What Are the Most Famous Aces in Golf History?

The one most golf fans of a certain age remember is Tiger Woods' 9-iron ace on the par-3 16th at TPC Scottsdale during the 1997 Waste Management Phoenix Open — his first PGA Tour hole-in-one, hit in front of a raucous crowd on the tour's rowdiest hole, and the moment that cemented the 16th as golf's closest thing to a stadium event. The ball bounced twice and dropped, and the noise reportedly rattled clubhouse windows hundreds of yards away.

The other Phoenix Open shot everyone brings up isn't technically a hole-in-one at all: Andrew Magee's 2001 albatross on the par-4 17th, where his drive rolled onto the green, struck fellow competitor Tom Byrum's putter as Byrum was lining up a putt in the group ahead, and deflected into the hole. It remains the only par-4 ace in PGA Tour history, and it happened by accident in the truest sense — Magee wasn't aiming at the flag from the tee, he was just trying to reach the green.

Those two shots get cited constantly because they're both well-documented tour moments with video and a paper trail — which matters, because plenty of "amazing hole-in-one" stories that circulate at the club level are exaggerated in the retelling. Nobody double-checks a buddy's scorecard from a Tuesday twilight round.

Why Do You Have to Buy a Round After an Ace?

Because tradition says so, and the tradition is old — golf writers trace references to hole-in-one insurance back to at least 1918, which tells you golfers have been budgeting for this exact obligation for over a century. The custom varies by club: some places expect you to buy a drink for your playing partners and then a round for whoever's in the clubhouse when you get back in; other clubs have softened it to putting a fixed amount behind the bar, or leaving a single bottle out for people to help themselves until it's gone. One theory for why the custom exists at all is that clubs wanted to profit off celebratory drinking; another, more charitable one, is that it emerged specifically to make golfers think twice before claiming an ace they didn't actually make. Either way, it's the reason a lot of serious amateurs actually carry hole-in-one insurance — a real, if niche, insurance product built around exactly the odds discussed above.

Sources

Frequently Asked Questions

Roughly 12,500 to 1 on a given par-3 attempt, based on figures widely used by hole-in-one insurance underwriters. It's an estimate, not a measured statistic, since nobody tracks every tee shot on every par 3.
Yes, but the gap is smaller than you'd expect — pros are commonly cited around 2,500 to 3,000 to 1, versus roughly 12,500 to 1 for an average amateur. Tighter shot dispersion helps, but the shot is still a tail event driven heavily by bounce and green conditions.
Verified long-distance aces are hard to confirm reliably and vary by source, so this article isn't going to hand you a specific "world record" number — treat any figure you see quoted elsewhere with some skepticism unless it's tied to a credible, cited source.
It depends entirely on the club's local custom. The most common version is a drink for your group plus a round (or a tab, or a bottle) for the clubhouse — but plenty of clubs have scaled it down to something more affordable than "everyone in the building."
On a standard par 3, an ace is a score of 1, which is two strokes under par — the same value as an eagle anywhere else on the course. See the full golf scoring terms guide for how all the under-par scores compare.
It helps your score for that round the same way any good hole does, and that round factors into your handicap like normal — there's no special bonus adjustment for aces specifically.

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