Practice & Improvement
Golf Strokes Gained Explained: The Stat That Actually Matters
What It Is, How It’s Calculated, and Why It Beats Every Other Golf Stat
April 28, 2026 · 9 min read · Stephen Pickering
What It Is, How It’s Calculated, and Why It Beats Every Other Golf Stat
April 28, 2026 · 9 min read · Stephen Pickering
Key takeaway: Strokes gained measures every shot you hit against a tour-pro benchmark. Mark Broadie’s research at PGA Tour built the expected-strokes table that powers it. The four categories — off the tee, approach, around the green, putting — tell you exactly which part of your game is leaking strokes. For amateurs, it’s usually around-the-green where the biggest gap to scratch lives.
Strokes gained measures every shot against a Tour-pro baseline for the same distance and lie. If a Tour pro averages 2.8 shots to hole out from 150 yards and you take 3.0, you’ve lost 0.2 strokes gained on that shot. Sum every shot across a round and you get a precise breakdown of where your strokes go — split across four categories: off-the-tee, approach, around-the-green, and putting. It’s the only golf stat worth taking seriously because it isolates *your* performance from the noise of luck, conditions, and course design.
This guide explains strokes gained in plain English — what it is, how it’s calculated, the four categories, why Tour analysts and Arccos/Shot Scope are built around it, and what it tells you about your game that no other stat can.
Strokes gained measures how each of your shots compares to a benchmark — usually a PGA Tour pro hitting the same shot from the same spot.
Imagine you’re 100 yards out, in the fairway. The PGA Tour data says a tour pro averages 2.93 strokes from there to holing out. You hit your wedge to 25 feet, then two-putt. You took 3 strokes from that 100-yard mark.
Strokes gained = 2.93 − 3.00 = −0.07 strokes.
You lost 0.07 strokes against the tour benchmark on that hole’s approach + putting sequence. Tiny amount. But across 18 holes, the small numbers add up.
If a tour pro averages 70 and you shoot 90, your total strokes gained vs the tour benchmark is −20. The interesting question isn’t *that* you’re 20 strokes worse — it’s *where* those 20 strokes are going. Strokes gained breaks the answer down to the shot level.
Strokes gained didn’t exist as a usable metric until 2011, when Columbia Business School professor Mark Broadie published the foundational research. Working with millions of PGA Tour ShotLink shots, Broadie built a giant table of “expected strokes to hole out” from every conceivable starting position on a golf course.
The table looks something like this (simplified):
- 100 yards in fairway → 2.93 expected strokes - 100 yards in rough → 3.20 expected strokes - 30 feet on green → 2.00 expected strokes - 6 feet on green → 1.32 expected strokes - 3 feet on green → 1.05 expected strokes
Multiply this by every yardage, every lie, every putt distance, and you have a complete map of how many strokes a tour pro is expected to take from anywhere on a course.
Once you have that map, you can score every individual shot. Did the shot save strokes vs the benchmark, or cost strokes? Strokes gained answers that for every shot in a round.
For any single shot:
> Strokes Gained = (Expected strokes BEFORE the shot) − (Expected strokes AFTER the shot) − 1
The −1 accounts for the shot you just hit (which counts as one stroke).
Example: you’re 150 yards out in the fairway (expected: 2.97 strokes to hole out). You hit your iron to 18 feet on the green (expected: 1.78 strokes to hole out).
Strokes gained = 2.97 − 1.78 − 1 = +0.19 strokes
You gained nearly a fifth of a stroke on that shot vs a tour pro. Good shot.
If you’d duffed it 50 yards and ended up 100 yards out in rough (expected: 3.20):
Strokes gained = 2.97 − 3.20 − 1 = −1.23 strokes
Lost more than a stroke. Bad shot.
For a deeper guide to handicap calculations and the data inputs that feed into them, see this explainer.
Calculating a Golf Handicap →Every shot you hit falls into one of four strokes-gained categories. This is the most useful part of the metric — it diagnoses *which part* of your game is leaking strokes.
Tee shots on par-4s and par-5s. Drivers, fairway woods, and long irons used from the tee. The benchmark accounts for both distance and accuracy — a 280-yard drive into the rough may score similarly to a 240-yard drive in the fairway.
For amateurs: this is rarely where the biggest leak is. Most amateurs lose strokes elsewhere, even if their drives feel like the obvious problem. Tour pros average around +0.5 strokes gained off the tee vs the field; amateurs average around 0 (i.e., they’re roughly average vs other amateurs).
Iron shots from 100+ yards out. Hitting greens in regulation lives here. The benchmark cares about proximity to the hole — a 6-iron to 12 feet is hugely better than a 6-iron to 50 feet, even though both might count as “GIR” on a scorecard.
For amateurs: this is often where the gap to scratch golfers is widest. The difference between a 15-handicapper and a scratch player on iron play from 150 yards is enormous.
Chipping, pitching, and bunker shots within 30 yards of the green. The benchmark expects most shots to finish close — pros average about 80% scrambling from 10 yards.
For amateurs: this is the highest-leverage category for improvement. A 15-handicapper typically scrambles around 30% from 10 yards. Improving that to even 50% drops 2-3 shots a round.
This is exactly the gap Scoring Zone is built to close — see the breakdown of structured short game practice.
How to Practice Short Game →Every putt counted, with the benchmark factoring in distance. A 30-foot putt that finishes 3 feet away gains strokes (good lag putt). A 30-foot putt that runs 8 feet past loses strokes.
For amateurs: putting is where the gap is *narrowest*. Tour pros are slightly better than amateurs from inside 6 feet, but the difference from 20+ feet is smaller than you’d expect — most amateurs three-putt occasionally but their lag putting isn’t catastrophically worse than tour level.
Fairways hit treats a 280-yard drive in the rough the same as a duck-hook out of bounds. Both are non-fairways. They’re not equally bad shots. Strokes gained captures the difference.
A golfer who chips it close has fewer putts because the chip did the work. Their “putts per round” looks worse than a golfer who misses every green and lag-putts to 3 feet. Strokes gained handles this — it credits the chipper for the close chip and the putter for the lag putt separately.
Two greens in regulation are not equal. One to 4 feet is worth maybe a stroke compared to one to 40 feet. Strokes gained: approach measures the difference. GIR doesn’t.
This is the killer feature. After 10–20 rounds of strokes gained data, you’ll see a pattern — maybe you’re average across the board except SG: ARG is −2 strokes per round. That’s diagnostic. Now you know exactly what to practise: short game from inside 30 yards.
Without strokes gained, you guess. With it, you measure.
The fully-automatic option. Grip sensors detect every shot, GPS logs the location, and the app calculates strokes gained for you against a tour benchmark. Arccos costs around $180 + ~$130/year. Shot Scope is a one-off purchase ($140–$300) with no subscription. Both are excellent for the right golfer.
The catch: you need to play 10–20 rounds with the system before the data is meaningful. And the data tells you the leak — not the fix.
Possible but tedious. Note your shot location, distance, and result for every shot in a round. After the round, look up expected strokes from each position. Subtract. Sum by category.
A handful of golfers do this manually in spreadsheets. Most stop after one round.
Scoring Zone takes a different approach. Rather than tracking strokes gained on the course, it benchmarks your *practice* against handicap-level expectations. The Performance Hub assessment generates a Short Game Handicap by running you through scored drills (chipping inside 3 feet, lag putting within 3 feet of the hole, bunker scrambling, etc.) and comparing your scores to the benchmark for your handicap.
It’s strokes gained for practice rather than for rounds — useful because it tells you whether your practice is moving the needle, not just what happened on Saturday.
The cleanest setup for serious improvement: an on-course tracker (Arccos or Shot Scope) for round data, and Scoring Zone for the practice that closes the gaps the tracker identifies.
Strokes gained measures how every shot you hit compares to a benchmark golfer (usually a PGA Tour pro) playing the same shot from the same spot. If a tour pro averages 2.0 strokes to hole out from 100 yards and you do it in 2.5, you’ve lost 0.5 strokes on that hole. Add it across 18 holes and you have a precise picture of where you’re losing strokes — far more useful than fairways hit or putts per round.
Strokes gained = (expected strokes from your starting position) − (expected strokes from your ending position) − 1 for the shot itself. Mark Broadie’s research at PGA Tour built the baseline expected-strokes table from millions of tour shots. Subtract that benchmark from your actual performance and you get how many strokes you gained or lost on each shot.
Off the tee (driving), Approach (irons from 100+ yards), Around the green (chipping, pitching, bunker shots within 30 yards), and Putting. Every shot you hit falls into one of these four categories. Tracking strokes gained by category tells you exactly which part of your game is leaking strokes — making it the best diagnostic stat in golf.
Fairways hit doesn’t account for distance or accuracy beyond the binary of fairway/not-fairway. Putts per round penalises golfers who chip close (fewer putts because the chip got near the hole). Strokes gained handles both — it measures the value of each shot relative to a benchmark, regardless of context. It’s the only stat that tells you definitively where you’re losing strokes vs better golfers.
Stephen Pickering
3-handicap golfer with 25 years on the course. Built Scoring Zone to bring structure and pressure to short game practice. Writes about what actually works from the practice green, not the press box.
Strokes gained tells you where the leak is. Scoring Zone tells you how to fix it — scored short game drills, benchmarks for every handicap level, and a Performance Hub assessment that generates your Short Game Handicap. Free during early access.
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