Undulation
Undulation is the wave-shaped unevenness of a surface, above all on the green.
The word comes from French and refers to the wavy modeling of the ground. On the Green undulation means: crests, hollows, steps and gentle waves that deflect the ball. Some greens are almost flat, others consist of several plateaus with pronounced height differences. Course architects use undulation deliberately to make every hole play differently and to use the Flag Position tactically. The stronger the modeling, the more demanding the putting — and the more important the right side of the approach.
In practice, the undulation decides your Putt before you even set up. An example: your ball lies eight meters to the right of the flag, and between ball and hole runs a crest from left to right. The putt breaks left at first, falls to the right behind the crest and runs on a flat piece of target toward the flag. Whoever reads only the last two meters does not play the first change of direction and stays far away. That is why Reading the Green always goes from the whole to the detail: first the big waves, then the fine breaks at the flag.
A typical mistake is putting against the topography. Putts uphill onto a step regularly come up short, putts out over a crest run too fast and break more strongly late. On strongly modeled greens, expect larger deviations and rather play the approach below the hole. Also popular: looking for the blame with the greenkeeper — undulation is intentional and belongs to the character of the course. Whoever reads the waves as a task instead of an annoyance putts on such surfaces far more relaxed immediately.
FAQ
How do I putt correctly on strongly undulating greens?
Always read the green from the whole to the detail: first the big waves and steps, then the fine breaks directly at the flag. A putt over a crest often breaks twice — first in one direction, behind the crest in the other. Whoever reads only the last two meters overlooks the first change of direction and stays far from the hole. The systematic approach is described in the article on reading the green.
Why do my putts on steps and crests always come up short?
Putts uphill onto a step or crest lose massive speed because the ball works against the modeling — they regularly come up short. Conversely, putts out over a crest run too fast and break more strongly late than expected. On strongly modeled greens, expect larger deviations and rather play the approach below the hole; then you putt uphill instead of downhill.
Is strong undulation intentional or a fault of the course?
Undulation is almost always intentional and belongs to the character of the course. Course architects use crests, hollows and plateaus deliberately so that every hole plays differently and the flag position can be used tactically. Whoever reads the waves as a task instead of an annoyance putts on such surfaces far more relaxed immediately — the greenkeeper can certainly not help it.