Question: Does it actually matter if I clean my grooves between shots?

Answer: Walk down any PGA Tour range and watch what happens after a wedge shot. Before the ball even lands, there’s a towel out… a brush dragged through the grooves… a tee picking out whatever’s left. It happens after every single wedge shot. It’s one of the simplest and most effective things golfers can do to keep their wedges in working order.

RELATED: Does a clean clubface really matter? What our test reveals about dirty clubs and spin

We actually have the data to hammer home the point.

Here’s the basic physics. Grooves exist to channel moisture and debris away from the contact point between the clubface and the ball. That contact generates friction, and friction creates spin. Spin is what gives your wedge shots their shape, ideal trajectory and, most importantly, their ability to stop on the green.

If you pack those grooves with a clump of grass or dirt, you’re suddenly guessing how the shot will play out with your tools.

A few years ago, we ran a test to find out exactly how much damage a dirty face does. We took a 60-degree wedge and a Foresight Sports GCQuad launch monitor and hit five 100-yard shots with a clean face, followed by five more shots after taking a divot and skipping the brush – the exact scenario that plays out many times a round for golfers who don’t think twice about it.

The gap was astonishing. With a clean face, we saw an average spin rate of just higher than 10,500rpm, right where PGA Tour players live on a full lob wedge. With a dirty face, the spin rate plummeted to 5,759rpm, or nearly half the spin you’d expect to find on a well-struck wedge.

Now think about what that might mean on a pitch shot or a chip from just off the green where you’re short-sided and have almost no green to work with. Those are the moments when spin is the difference between a tap-in and a 15-footer.

When your grooves are caked with debris, you don’t get to rely on spin. You have to be perfect with your landing spot and then hope the ball trundles to the hole. That’s a tough ask for anyone, let alone a middle handicapper trying to hit a shot that’s already a serious challenge.

The solution is almost embarrassingly simple. A groove brush costs about $5 or $10 and clips to your bag. Two seconds for a little scrub between shots. That’s the entire ask.

Tour pros aren’t cleaning their clubs because their caddies tell them to. They’re doing it because they understand – viscerally – what dirty grooves do to spin. Our data confirms what they already know. Clean your grooves. Every shot. No exceptions.