How To Use A Divot Tool: The Correct Way To Repair Ball Marks On The Green

To repair a ball mark correctly with a divot tool, insert the prongs into the turf at a 45-degree angle around the high edge of the mark, and gently push the tool forward and inward toward the center of the depression. Repeat this motion from three to four points around the perimeter of the crater before lightly tapping the surface flat with the sole of your putter. Never pry upward, as this tears the delicate grass roots from the underlying soil, killing the turf and extending its healing time from 24 hours to several weeks.

Pre-Round Equipment Checklist and Green Etiquette Basics

To maintain immaculate putting surfaces, you must first understand a critical piece of golf terminology: the difference between a "divot" and a "ball mark" (or "pitch mark"). A divot is the slice of turf displaced from the fairway or tee box by a golf club during a swing. A ball mark is the crater or depression made on the putting green when a high-trajectory approach shot impacts the surface.

While players often refer to the handheld device used to fix greens as a "divot tool," its primary engineering purpose is to repair ball marks on the putting green. Fairway divots are corrected by replacing the severed turf slice or filling the void with a sand-and-seed mixture. Repairing greens, however, requires a precise understanding of soil physics and turfgrass biology.

Before walking onto the first tee, ensure you have the proper gear and conceptual understanding to execute this repair without damaging the course.

Required Materials, Standards, and Benchmarks

• Essential Tool Options:
  
  
  • Standard Two-Prong Metal Tool: The industry-standard metal fork (milled steel, aluminum, or brass) featuring two 1-inch to 1.5-inch prongs. Offers the best control and longevity.
  • Single-Prong Tool: Used by advanced players and greenskeepers. It requires high precision but minimizes structural root displacement.
  • Automatic/Spring-Action Tool: Features retractable prongs that deploy via a button mechanism. Highly portable, though sometimes bulkier in the pocket.
• Mandatory Prerequisite Knowledge:
  
  
  • Grass Anatomy: Putting greens are composed of specialized, ultra-low-cut turfgrasses—most commonly Creeping Bentgrass (Agrostis stolonifera) in cool climates or Bermuda Grass (Cynodon dactylon) in warm zones. These grasses rely on shallow, dense root networks.
  • The Pivot Rule: The golden rule of greens maintenance is compression over leverage. You must never lift, pry, or pull the soil upward.
• Time and Budget Benchmarks:
  
  
  • Time to Complete: 10 to 15 seconds per ball mark.
  • Financial Investment: $5 to $25 for a high-quality, durable metal tool.
  • Healing Window: A correctly repaired ball mark recovers in 24 hours. An improperly repaired mark takes 15 to 21 days to heal, leaving a dead, brown scar that disrupts putts.

Step-by-Step Ball Mark Repair and Greens Preservation Workflow

When a golf ball descends from a height of 100 feet or more, it compresses the soil forward and down, creating a crater. The back wall of the crater is pushed upward and backward, forming a small mound of displaced turf, while the front (entry side) of the crater is compacted. To restore the green, you must gently displace this compacted soil from the edges back toward the center.

Step 1: Identify and Evaluate the Ball Mark

Locate your ball mark immediately upon walking onto the putting surface. If you cannot find yours, locate and repair another mark left by a previous player. Inspect the angle of entry. The side of the crater with the raised mound of turf is the "back wall," indicating the direction from which the ball arrived. The low, compacted side is the "entry point."

Warning: Do not begin repairing a ball mark that contains loose, completely severed chunks of grass. If the turf is entirely detached, discard the loose grass, as leaving dead organic matter in the hole will encourage fungal growth and turf disease.

Step 2: Insert the Tool at a 45-Degree Angle

Position the prongs of your divot tool at the outer edge of the raised mound (the back wall of the crater). Tilt the tool to a 45-degree angle relative to the putting surface. Do not insert the tool vertically at a 90-degree angle, as this can slice straight through the main root systems. Push the prongs smoothly down into the turf to a depth of approximately 1 to 1.5 inches. You should feel the tool penetrate the soil beneath the root layer.

Pro-Tip: If the green is exceptionally dry and firm, apply steady pressure with your thumb placed on the flat face or logo-plate of the tool to prevent the prongs from slipping and scraping the top layer of grass.

Step 3: Apply Forward and Inward Pressure

Gently push the top handle of the divot tool forward, toward the center of the crater. This action uses the soil behind the tool as a natural fulcrum to nudge the compressed turf and root structure back into the open void. The motion should feel like a horizontal squeeze.

Do not pull the handle backward or push down to pry the grass upward. Prying brings up dirt, exposes the roots to direct sunlight, shears the roots from the soil matrix, and leaves a prominent brown dirt spot on the green.

Step 4: Work the Perimeter (The Clock Method)

Remove the tool from the first insertion point and move to the opposite side of the ball mark (the entry point). Insert the tool at a 45-degree angle and repeat the forward-pushing motion toward the center.

Proceed to work around the remaining sides of the crater using a clockwise or counter-clockwise pattern (think of the positions as 12, 3, 6, and 9 o'clock). At each point, push the surrounding turf inward. By the end of this rotation, the crater should be completely closed, and the surface should look slightly raised and textured, but devoid of exposed soil.

Step 5: Compact and Flatten the Repaired Area

Once the grass has been gathered back into the center of the depression, use the flat sole of your putter to lightly tap down on the repaired area. Press straight down with moderate, even pressure.

This action levels the surface, re-establishes capillary contact between the displaced roots and the soil, and ensures that golfers putting behind you encounter a perfectly flat, true-rolling surface. Never use your shoe to stamp the mark flat, as golf spikes or aggressive tread patterns can tear the newly aligned grass leaves.

Turfgrass Characteristics and Healing Metrics

Different varieties of turfgrass behave differently under physical stress. To optimize your green repair technique, you must adapt your approach to the specific type of grass installed on the course.

Common Green Repair Failures and Field Adjustments

Even experienced golfers can make mechanical errors that damage the delicate putting surface. Here are the most common field failures, their structural root causes, and how to correct them on the course.

Scenario 1: The "Brown Spot" Crater (Dead Turf)

• Root Cause: The golfer used the divot tool as a lever, pushing the handle downward to lift the center of the compressed ball mark upward. This action shears the shallow root systems off the grass blades and exposes a pocket of dry soil directly underneath, starving the grass of moisture and nutrients.
• Actionable Fix: Once the roots are sheared, the grass cannot be reattached. To remedy this in real-time, perform a secondary repair around the perimeter of the dead spot. Insert your tool at a 45-degree angle just outside the dead zone and gently push healthy, live turf inward from all sides to minimize the size of the exposed brown patch.

Scenario 2: The "Spongy Mound" (Uncompacted Repair)

• Root Cause: The turf was pushed inward correctly, but the golfer skipped the final compaction step with the putter sole. The raised grass sits higher than the surrounding green speed profile, leaving a soft, puffy mound that will be scalped by the greenskeeper's mower blades the following morning.
• Actionable Fix: Step back onto the mound and place the flat sole of your putter directly over the area. Apply firm downward pressure, using your body weight to compress the mound until it sits flush with the plane of the putting green.

Scenario 3: Soil Cracking on Hard, Dry Greens

• Root Cause: On hot summer afternoons or wind-dried links courses, the clay or sand-heavy soil beneath the green can bake hard. Forcing a divot tool straight into this crust cracks the surrounding soil matrix, destroying the root zone structure.
• Actionable Fix: Do not force the tool deep into the dry ground. Instead, insert the tips of the prongs only 0.5 inches deep. Use a series of tiny, incremental nudges around the perimeter of the mark rather than a few deep pushes. This gathers the grass blades together without fracturing the dry soil block below.

Scenario 4: The Slit Tear (Root Rupture)

• Root Cause: The golfer twisted or rotated the divot tool like a key while the prongs were deep in the ground. This action shears the roots sideways and cuts a wide path through the turf, leading to parallel dead lines.
• Actionable Fix: Keep the prongs of the tool perfectly parallel to the direction of your push. If you need to redirect the soil, pull the tool completely out of the turf, realign it, and re-insert it at the new angle rather than twisting it while underground.

Frequently Asked Questions

What is the difference between a divot and a ball mark?

A divot is a piece of turf sliced out of the fairway or tee box by a golf club during a swing, leaving an open patch of dirt. A ball mark (or pitch mark) is a depression or crater made on the putting green when a high-trajectory ball lands from a distance. Divot tools are designed specifically to repair ball marks on greens, not fairway divots.

Can I use a standard wood or plastic golf tee to repair a ball mark?

Yes, a standard golf tee can be used if you do not have a dedicated divot tool. Insert the tip of the tee at a 45-degree angle around the edge of the crater and gently push the turf inward toward the center, repeating this process around the perimeter. However, because a tee has a single, round point, it requires more insertions to successfully close the gap compared to a two-pronged tool.

What happens if I pull up on the grass while repairing a ball mark?

Pulling up on the grass tears the roots from the soil beneath, cutting off the plant's water and nutrient supply. This kills the grass in that spot and leaves a dry, brown patch of dirt. Additionally, it creates an uneven putting surface that takes up to three weeks to heal, compared to just 24 hours when repaired correctly by pushing inward.

Is a single-prong or double-prong divot tool better?

A double-prong tool is generally better for the majority of golfers because it distributes the pressure evenly and makes it easier to push the turf back into place without tearing. A single-prong tool requires a higher level of precision and is favored by some greenskeepers and low-handicap players because it causes less disturbance to the roots when used with a highly skilled technique.

Should I repair ball marks that are not mine?

Yes, you should always repair your own ball mark plus at least one other mark left by a previous player on every green. This practice helps maintain the health and consistency of the putting surfaces for everyone on the course, preventing localized turf death and keeping the greens smooth and true.

Protect the Quality of Your Home Course

Perfecting your ball mark repair technique is the ultimate sign of respect for both the game of golf and the hard work of your course's greenskeeping crew. Keep a high-quality metal divot tool in your pocket during every round, and take pride in leaving every green in better condition than you found it.