Windmill Rotation | Analysis and Scoring
partner4 min
The next movement in the DRVN Mobility Assessment is the Windmill Rotation.
This test is designed to answer a very specific question:
How much usable rotation does this golfer actually have for their backswing — and how evenly can they access it?
Rotation in the golf swing doesn't come from twisting harder. It comes from the body's ability to rotate through the thoracic spine while the lower body stays organized and grounded.
This assessment shows you whether that capacity exists, and just as importantly, whether it exists on both sides of the body.
What the Windmill Rotation Assesses
The windmill rotation focuses on three critical elements of backswing readiness.
First, thoracic spine mobility — the golfer's ability to rotate through the middle of the back rather than compensating through the lower spine or hips.
Second, lower-body stability — whether the hips can remain quiet and stable while rotation happens above.
Third, side-to-side symmetry — one of the most overlooked factors in golf movement. Many golfers rotate freely in one direction and are restricted in the other. That imbalance matters.
Together, these three elements give you a clear picture of how a golfer loads into the backswing and how sustainable that movement pattern is over time.
Setting Up the Test Correctly
Execution matters.
The golfer begins in a stance wider than shoulder width. This stance locks the hips into position and minimizes lower-body contribution. The feet stay planted, and the intent is clear: rotation must come from the upper body.
By controlling the setup, the test isolates thoracic mobility rather than allowing compensation. What you see here is what the golfer actually owns.
As the golfer rotates, pay close attention to how movement differs from one side to the other. Restrictions, compensations, or early stiffness all become visible very quickly.
Scoring the Windmill Rotation
The windmill rotation is scored on both sides of the body. The final score reflects overall rotational capacity and symmetry.
| Score | What You'll See |
|---|---|
| 1 | Rotation limited up to 90 degrees on both sides |
| 2 | Rotation passes 135 degrees, midway between parallel and vertical |
| 3 | One side reaches 180 degrees; the other side remains restricted |
| 4 | Both sides reach 180 degrees with controlled, smooth rotation |
| 5 | Both sides move freely past 180 degrees with no visible restriction |
Understanding Asymmetries
A 3-point score is common, especially in experienced golfers.
Many players — particularly right-handed golfers — show more rotation on their backswing side. The body has practiced that movement thousands of times. While this may support the backswing, it also highlights a limitation that can affect sequencing, durability, and long-term progression.
A 4-point score — full rotation on both sides — is considered the minimum standard for clean progression.
Why This Test Matters for the Golf Swing
The windmill rotation shows you how well a golfer can load into the backswing while staying connected to the ground.
It reflects:
- the ability to create separation,
- the capacity to rotate without collapsing posture,
- and the readiness to progress into more dynamic rotational work.
When this movement improves, backswing depth improves. When symmetry improves, sequencing improves. And when sequencing improves, the swing becomes more efficient and repeatable.
Using the Results to Guide Next Steps
This assessment immediately informs training decisions.
- If rotation is limited, thoracic mobility becomes a priority.
- If one side is restricted, asymmetrical work is required.
- If the hips won't stay quiet, lower-body stability needs attention.
Each adjustment moves the golfer closer to a body that can rotate freely, load effectively, and deliver force without compensation.
Closing Thought
The windmill rotation isn't about how far someone can reach.
It's about how well they can rotate where it matters, stay grounded while doing it, and access that movement on both sides of the body.
When that capacity is present, the backswing becomes easier to build — and far easier to repeat.