How to Read a Green
To read a green, you work out which way the ground slopes between your ball and the hole, then choose a start line and speed that let the ball curve into the cup. It sounds like an art, but a simple routine gets most beginners most of the way.
The curve of a putt is called the break. Greens are rarely flat, and even a gentle slope can move a slow-rolling ball a long way.
Step 1: Read the big picture as you walk up
Your read starts before you reach the green. As you walk in, look at the overall shape of the land:
- Where is the high side? Greens are usually built to drain water off, so one side is often higher than the other.
- Where would water run? Picture tipping a bucket of water on the green. The direction it flows is the direction your ball will drift.
- What's around the green? A hill on one side or a pond or valley on the other often tells you which way it tilts.
Step 2: Look from behind the ball
Crouch down a few paces behind your ball and look along the line to the hole. Getting low makes slopes easier to see. Ask yourself whether the putt goes uphill, downhill or across a slope, and roughly how much.
Step 3: Look from the low side
Walk to the side of the putt that's lower and look up at the line. From the low side, the slope is much easier to judge, and you'll also get a good feel for the length. If you're unsure which side is lower, look from both.
Step 4: Feel it with your feet
As you walk around, notice whether your weight leans one way. Your feet can feel slopes your eyes miss, especially on greens that look flat.
Step 5: Pick a speed, then a line
Speed and break go together. The slower the ball rolls, the more it breaks. So you can't choose a line until you've chosen how firmly to hit it.
| Speed | Effect on break | When to use |
|---|---|---|
| Firm | Less break, plays straighter | Short uphill putts |
| Normal (dies just past the hole) | Medium break | Most putts |
| Soft (just reaches the hole) | Most break | Fast downhill putts |
Most of the break happens in the last few feet, when the ball is slowing down. So pay the most attention to the slope near the hole.
Step 6: Choose an aim point
Once you know the speed and the break, pick a spot to start the ball on. It might be a point a cup's width outside the left edge, or a mark on the green a few feet in front of you. Then putt straight at that spot and let the slope do the rest.
Many beginners under-read putts, so they miss on the low side. If you keep missing below the hole, try playing a little more break.
Other things that affect the read
- Grain: on some grasses, especially the Bermuda grass common in warm climates, the blades grow in one direction. Putting with the grain is faster, against it is slower. Grass that looks shiny is usually growing away from you.
- Wet or dry: a wet green is slower and breaks less. A dry, firm green is faster and breaks more.
- Time of day: greens tend to get a little quicker as they dry out later in the day.
What the rules allow
You can walk around and crouch down as much as you like. Under the Rules of Golf you can also repair damage on the putting green, such as ball marks and spike marks. You're not allowed to test the surface by rubbing it or rolling a ball on it during a round. Keep your read reasonably quick, too: your playing partners will thank you.
Try it in Mashy
Greens in Mashy have slopes and mounds, and the green read overlay shows them: high ground is coloured warm and low ground blue, with arrows marking the steep spots. It's like being able to see the bucket of water running off the green. You can switch the overlay off in settings once you want to judge the slopes yourself. For more on stroke and speed, see how to putt better and our lag putting tips.
Frequently asked questions
How do you tell which way a green slopes?
Look at the green from its lower side and from behind the ball, and notice which way your feet lean as you walk across it. Thinking about where rainwater would drain off is a quick shortcut. The surrounding landscape helps too, since greens often tilt away from hills and towards ponds or valleys.
Does a putt break more when it is hit softer?
Yes. A slower putt spends longer rolling, so gravity has more time to pull it sideways, and it breaks more. A firmer putt breaks less but runs further past if it misses. That's why you should choose your speed before you choose your line.
What is the grain on a golf green?
Grain is the direction the grass blades grow. On grasses such as Bermuda it can be strong enough to change the speed and the break of a putt. Putting with the grain is faster, against it is slower, and a shiny-looking patch usually means the grass is growing away from you.
Is plumb bobbing a good way to read greens?
Plumb bobbing means holding your putter up as a vertical line to judge slope. Some players like it, but it only works well if you use it correctly and have a dominant eye lined up properly. Most beginners do better by looking from the low side and feeling the slope with their feet.
Does Mashy show the slope on greens?
Yes. Mashy's green read overlay colours high ground warm and low ground blue, and slope arrows show the steep spots. You can turn it on or off in the settings, and the view zooms in for putts inside 10 feet.