The fix for Grass or moisture between face and ball

Handling grass or moisture between face and ball

What is actually happening

Anything trapped between face and ball at impact reduces the friction that creates spin. The shot launches higher, carries further than expected and runs on landing. This is a lie problem rather than a swing problem, and no swing change fixes it.

Swing arc
Lowest point

Same strike as the fairway

The fix

When the ball sits in light rough, or the grass, the ball or the clubface is wet, something gets squeezed between the face and the ball at the moment they meet: blades of grass, a film of water, or both. The strike can be dead centre and the swing identical to the one you make from the fairway. What has changed is what the ball touches. Backspin depends on the face gripping the cover of the ball during the brief moment they are in contact, and grass and water take that grip away, so the ball slides where it would normally be held.

Less grip means less backspin, and that changes the whole shot. The ball launches higher than you expected, carries further than the same swing would send it from a dry fairway, and has nothing to stop it when it lands, so it runs. With a full iron this is the flyer that sails over the back of the green. Around the green it is the pitch that climbs, lands softly and still releases past the hole. Start direction is still set by where the face points at impact. This is a distance and stopping problem.

In a greenside bunker you put sand between the face and the ball on purpose, and too much or none at all is the fault. Here nobody chose to put anything there, and no swing takes it away. Grooves give some of the grass and water somewhere to go, but the equipment rules limit their size, so no conforming club removes the effect.

You can confirm it from things you can see. Before the shot, stand behind the ball and look for grass standing up behind it, dew on the grass, or a wet ball. After the shot, look at the face: green streaks, a wet film or grass packed into the grooves mean something was trapped. Mark the face with a dry-erase pen and the print will sit in the middle of the grooves but come out smeared. Then hit the same club with the same swing from a clean, dry lie. If that ball carries its normal distance and stops, the lie made the difference. A thin shot is a different fault: it comes off low with a stinging feel and a mark on the bottom grooves, where a flyer flies at normal height or higher and goes further. The change happens before the swing, in how you read the lie and choose the shot. From light rough with grass behind the ball, expect less spin and plan for it: take less club than the yardage suggests, or pick a landing spot shorter than you would from the fairway and let the ball run to the target. How much less depends on the grass, the wet and the club in your hand, so work out your own numbers with the drills below. In the wet, drag a tee along the grooves and dry the face on a towel before every shot, because that is the one part of the problem you can remove. Keep your normal ball-first strike. A club coming down into the back of the ball passes through less grass on the way in than one sweeping along the ground, but that only reduces what gets trapped.

The instinctive responses make it worse. Most golfers assume rough costs distance and take one more club, which is sound from a lie where the ball is buried at the bottom of thick grass and exactly wrong from one where it sits up or halfway down with grass packed behind it. After a flyer goes long, the next instinct is a gentler swing from the rough, and a gentle swing tends to slow into the ball, which moves the bottom of the arc around and brings a heavy strike. Around the green the instinct is to scoop the ball out or chop down harder to make it spin. Scooping adds loft and meets more grass before the ball, and chopping cannot restore spin the grass has already taken. Worst of all is rebuilding a sound swing because of shots from a bad lie. Nothing in the swing caused this.

Drills

Work through them in order. Each one says what it needs before you start.

Same swing, two lies
Find a spot where short grass meets light rough. Drop three balls on the short grass and three in the rough with grass standing up behind each one. With a nine iron, hit all six at the same target with the same swing, marking where each ball first lands, then pace off the carry and the roll for both groups. Do three rounds. Success is being able to say, in paces, how much further the rough balls carried and ran, with the three rounds agreeing within a few paces. Then repeat the drill with a mid-iron, and take those numbers onto the course to choose your club for full shots from that kind of lie.
Needs Tees or coins to mark where each ball lands
Wet face, dry face
On a pitch of about twenty paces, clean the grooves with a tee, dry the face on a towel and hit three balls. Wipe the face with a damp towel and hit three more, changing nothing else. Watch the first bounce and the roll of every ball, and repeat the pair of groups twice. Once the difference is plain to see, make the cleaning routine permanent: for the rest of the session, drag the tee along the grooves and dry the face before every ball, and count any ball struck with grass or water visible on the face as a failure. Success is a full bucket with no failures. Then carry the routine onto the course for every shot from rough and every shot in the wet, full swings included.
Needs A dry towel, a damp towel and a tee
Landing towel from the rough
Drop fifteen balls in light rough just off a practice green, with grass behind each. Lay a towel on the green short of the hole, where you think a ball from that lie needs to land to run out to the hole. Chip the first five to land on the towel, moving the towel after each one: closer to you if the ball finished long, further away if it finished short. Leave the towel where it ended up and hit the last ten. Success is at least six of the ten finishing within two club lengths of the hole. Pace the distance between the towel and the hole and compare it with the same shot from the fringe; that difference is your allowance for this lie. Repeat with a longer pitch, then with a full wedge.
Needs A towel
Call the lie first
Toss ten balls into light rough so each lie is a surprise. Before hitting each one, stand behind it and call it out loud: clean, meaning the club will reach the ball without much grass in the way, or flyer, meaning grass stands between where the club will arrive and the ball. Choose your club and landing spot from the call, then hit the shot. Success is at least seven of ten where the ball did what you called: normal carry and stop for a clean call, extra carry and run for a flyer call. When your calls hold up with a wedge, do the same with full shots from a mid-iron, then make the call part of every shot from rough on the course.
Needs nothing but a club

Browse every drill on the site

Practice plan and log

Practise this fix, day by day

Keep a dated log of every session against this fix, so in a few weeks you can read back whether the change has taken instead of trying to remember.

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Or turn this fix into a practice plan

With a free account, the drills above become a 14-day plan: the setup checks and the first drill for three days, then the next drill, a rest day every fourth day, and a re-test on the last day that sends you back through the questions. Each day is a short list to tick off at the range, with reminders by email or in your calendar if you want them.

How the 14 days run

Day 1Ten balls as a baseline, then the setup checks and the first drill
Days 2 to 3The first drill again, one checkpoint and one feel a day
Day 4Rest, as are days 8 and 12
Days 5 to 11The next drills in turn, each warmed up by the one before
Day 13Every drill once, then every checkpoint
Day 14Re-test: the baseline again and the questions for your symptom

Checkpoints

What to look for to know whether the change has taken.

Standing behind the ball, you can see grass between the back of the ball and where the club will arrive, or the grass and the ball are wet.
After the shot, the face shows green streaks, a wet film, or grass packed into the grooves.
A strike mark made with a dry-erase pen sits in the middle of the grooves but comes out smeared.
The ball flies at normal height or higher, carries further than the same club from the fairway, and runs after landing.
From a clean, dry lie with the same club and swing, the ball carries its usual distance and stops where you expect.

Feels

A feel is not a description of what the club does. It is whatever gets your body to do it, and a correct change usually feels exaggerated long before it looks correct.

The swing is the one you make from the fairway; only the landing spot has moved closer to you.
Once the ball lands it is a putt, so you are choosing where it starts rolling rather than where it stops.
The club comes down into the back of the ball instead of sweeping along the grass to reach it.

Symptoms that lead here

Each of these can resolve to this cause. If the page above does not match what you are seeing, start from the symptom instead and let the questions narrow it.

If this is not it: causes that produce the same shots

What this rests on

40+ TrackMan Parameters ExplainedTrackMan, accessed 2026
The Equipment Rules, Part 2: Conformance of ClubsThe R&A and the United States Golf Association, 2024

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