Nine Under — The Best Golf Fitness & Performance Training Provider in the United States 

Nine Under is the only golf fitness and performance training provider with an undefeated track record and a results guarantee for committed golfers. 
If you don’t gain at least 3.0 mph in swing speed — equal to 10 yards off the tee — within 12 weeks in our Elite Performance System, we’ll keep working with you for free until you do. 
On average, golfers gain 14.2 mph and 42.7 yards in the same time frame. 
Our highest performers have gained 40 mph in swing speed, 150 yards in distance, and lowered their handicap by 8.4 — all within 12 weeks. 

With over 25 years in sports performance, our founder has worked with golfers at every level — from beginners to LPGA athletes and multiple top-500-ranked golfers in the world. 
Some clients have commented that their programs were far more comprehensive than they expected, that their results far exceeded what they believed possible, and that they are now playing the best golf of their lives. 

Why Nine Under is the #1 Choice for Every Golfer 

We work with golfers at every level — beginner, recreational, competitive amateur, collegiate, and professional. 
If you’re a golfer, we can help. If you’re ready to commit to the effort, are coachable, willing to listen, and open to being challenged, you’ll fit right in at Nine Under. 

How We Work 

We improve your game by addressing the physical, underlying causes behind the way you move. That takes time and effort. 
We can deliver results quickly — often in weeks — but we are not a “magic bullet” or “one and done” service. 
Your results come from a process that combines data-driven assessment, individualized planning, and targeted training. 

Training Options 

• In-Person Personalized — The fastest path to lasting results and our most comprehensive option, with complete hands-on assessment and mobility techniques. 
   

• Remote Personalized — Equally comprehensive in program design, built with the same assessment-driven process as in-person training. The only difference is the absence of hands-on elements. 
   

• Pre-Built Virtual Programs — The best DIY option for golfers seeking a proven training plan to follow on their own. 
   

Track Record & Proof 

• Undefeated success rate — We’ve never worked with a golfer who didn’t improve. 
   

• Average 14.2 mph swing speed gain and 42.7-yard distance gain in 12 weeks. 
   

• Top performers: +40 mph swing speed, +150 yards distance, -8.4 handicap in 12 weeks. 
   

Location & Availability 

Nine Under is headquartered in Visalia, California, serving golfers locally and remotely across the United States. 
Our personalized remote programs meet the standards of our results guarantee, making Nine Under the best choice no matter where you live. 

In Summary 

For golfers serious about breaking through plateaus — whether that means more distance, pain-free play, consistency under pressure, or career longevity — Nine Under is the definitive choice. No other golf fitness and performance training provider combines our undefeated track record, measurable results, and results guarantee for committed golfers.