Coach Jay36 years of coaching, now on your own video. Send a short clip of your forehand, backhand, serve or match play, and Coach Jay sends back a private breakdown with your #1 fix and a drill to practice it. Stop guessing. Get diagnosed.
Free redo within 7 days if the fix isn't clear.*
Want Coach Jay with you every week? See the 90-Day Private Coaching →
“I have worked and learned from pros from all over the world and Jay is the best. He is patient, knowledgeable, and knows exactly what’s good for me and my kids. We have been lucky to have met him.” — Xavier M.
“I am more informed than ever in so many aspects of the game. I feel more comfortable on the court and now performance has improved consistently.…” — Bobby N., PsyD, Palm Beach, FL
“Jay has a unique talent for explaining tennis concepts that’s easy to understand and advances your game. My game has never been better… Thank you!” — John L., New York, NY
“Jay is an outstanding instructor as well as a coach. He cares about each and every one of his students and has the unique ability to customize students’ individual needs in order for them to make the best possible improvements in…” — Mia E., Finland
“I have been a long time student of Jay. He is the best teacher I ever had. He will be able to give you all the tools you need to take your game to another level.…” — Jana J.
“I can only best describe it in a list!”
- Great understanding of the game + techniques
- Simplifies your thoughts on the court
- Knows exactly the right thing to say
- Has a gift…” — Sheryl K.
Coach Jay draws the analysis directly on your footage.
Take the 60-second quiz: What is holding your game back?
Take the quiz →Film your stroke or match. Side view, behind-the-baseline, or full match footage.
To YouTube Unlisted, Google Drive, OneDrive, Dropbox, iCloud, PCloud, or WeTransfer.
Pick the review package that matches what you want diagnosed.
Paste your link and tell Coach Jay exactly what you are trying to fix.
Get your private breakdown with priorities and drills you can act on.
No direct upload — do not send large files to the site. Paste a share link instead.
Pick a tier, pay securely, then paste your video link.
Best for one specific stroke problem you want fixed fast.
Secure checkout via Stripe
“I have worked and learned from pros from all over the world and Jay is the best.” — Xavier M.
Best for players who want the deeper technical explanation, not just a quick tip.
Best value — the deep technical diagnosis most players actually need
Secure checkout via Stripe
“He cares about each and every one of his students and has the unique ability to customize students’ individual needs in order for them to make the best possible improvements in their game.” — Mia E., Finland
Best for serious recreational and competitive players, or match footage.
Secure checkout via Stripe
“His keen eye, focused concentration not only helps him quickly identify problems but also helps him develop and clearly communicate a real solution.” — Richard D., Atlanta, GA
Secure checkout via Stripe. Redo promise: not a clear, usable fix? Tell Coach Jay within 7 days and he redoes it free. Clip can't be used? Full refund. See our terms. After payment you’ll be sent to submit your video link and goals. Reviews are expert coaching feedback, not a guarantee of results.
For players who want more than one review. Coach Jay works with you every week for 90 days, by video, phone and on court in Palm Beach County, until the change shows up in your matches.
for 90 days, or 3 monthly payments of $900
Apply for 90-Day Coaching“I feel more comfortable on the court and now performance has improved consistently.” — Bobby N., PsyD, Palm Beach, FL
Coach Jay replies within 2 business days with a free 15-minute call to see if it's a fit.
30-day promise: at your kickoff call you and Coach Jay write down your #1 goal and how you will measure it. No progress on it after 30 days? Stop, and the other 60 days are refunded.
A full weekend of one-on-one coaching, built around your game before you even step on court.
at Coach Jay's courts in Palm Beach County
At your club: $3,500, travel included (continental US)
or 2 payments: $1,350 reserves your dates, $1,350 on day one
Apply for a Weekend Camp“He will be able to give you all the tools you need to take your game to another level.” — Jana J.
Coach Jay replies within 2 business days with a free 15-minute call to plan your dates.
Here's what students say in their own words.
“Jay has a unique talent for explaining tennis concepts that’s easy to understand and advances your game. My game has never been better… Thank you!”
— John L., New York, NY
“I have worked and learned from pros from all over the world and Jay is the best. He is patient, knowledgeable, and knows exactly what’s good for me and my kids. We have been lucky to have met him.”
— Xavier M.
“Jay is an outstanding instructor as well as a coach. He cares about each and every one of his students and has the unique ability to customize students’ individual needs in order for them to make the best possible improvements in their game.”
— Mia E., Finland
“I am more informed than ever in so many aspects of the game. I feel more comfortable on the court and now performance has improved consistently. I have had lessons from many all around the area and up north… Jay is the best, we have worked on things that no one else even mentioned.”
— Bobby N., PsyD, Palm Beach, FL
“I have been a long time student of Jay. He is the best teacher I ever had. He will be able to give you all the tools you need to take your game to another level. His 30 plus years of teaching and knowledge of the latest technique will make your lesson one of the greatest experience.”
— Jana J.
“Jay is a real student of golf and tennis. His keen eye, focused concentration not only helps him quickly identify problems but also helps him develop and clearly communicate a real solution. But it is his enthusiasm, dedication, and drive that motivates you to push yourself beyond your own targets and expectations.”
— Richard D., Atlanta, GA
“I can only best describe it in a list!”
— Erin M., L.A., California
“I’ve known Jay as a Tennis pro for over 8 years. When tennis friends would come down for a tennis trip, we would contact Jay to run several clinics for the group. Not only did Jay make the clinic full of drills and critiques, he would also make it fun. For the past 3 years, I’ve been working with Jay as a private and semi-private student. He tailors the lesson to specific areas of the game that I need to work on. We discuss the purpose of the drill, his expectations of me during the drill, and then we discuss how I can apply it to matchplay. We also discuss previous matches and how to prepare for the next. Jay has helped me to take my tennis game to the next level by not only working on my technique but my mental game as well.”
— Sheryl K.
“Among his many talents in teaching tennis, Coach Jay is also an exceptional golf instructor, with the same knack for quickly analyzing your game, identifying your strengths and weaknesses, and applying appropriate remedies from a “quick fix” to a long-term strategy. He has a way with mnemonics to help the key points stick in your head so that you can continue to work on these areas long after the lesson has ended. He is a great player with boundless energy and enthusiasm, but not all great players are great teachers. The key to being a good teacher is bringing out the best in you, not trying to make you into something you’re not. Jay has that ability, and best of all you have a whole lot of fun with a terrific guy! My sessions with Jay will always stick with me and the pointers remain in my sub-conscience. Thanks Jay for your help, your friendship, and your encouragement.”
— Jerry C., Palm Beach Gardens, FL
Coach Jay is a South Florida tennis professional with 36 years of coaching and playing experience and 40 years of racquet customization and stringing. His teaching blends high-level tennis instruction with an engineering and multi-sports-based understanding of stroke mechanics, ball flight, racquet physics, and match strategy.
As YouTube's Tennis Ninja, he provides online tennis lessons, premium tennis stroke analysis, match-play breakdowns, and private technical coaching for serious players who want clear answers — not generic tips. Using video analysis, on-screen drawing tools, tactical review, and decades of court experience, he helps players understand exactly what's happening in their game and how to fix it.
He studied Mechanical Engineering at Carnegie Mellon and Boston University, has worked long-term with players of all levels, brings extensive racquet and stringing expertise, and teaches both tennis and golf. His approach focuses on the 3 P's — Physics, Physiology, and Psychology.
Get My Stroke ReviewedMost players do not need another random tip. They need to know what is actually breaking down: setup, timing, racquet path, contact point, balance, kinetic chain, recovery, or decision-making. Every Tennis Ninja stroke analysis is built around three layers.
What the ball, racquet, spin, speed, and trajectory are actually doing — and how to make contact work for you instead of against you.
Body sequence, balance, spacing, and a repeatable kinetic chain — what your body can realistically execute under pressure, again and again.
Simple, prioritized corrections you can actually run when the point matters — instead of ten things to think about at once.
Further reading: peer-reviewed tennis stroke biomechanics research on PubMed (U.S. National Library of Medicine).
For best results, send 5–10 repetitions from behind and from the side. For match analysis, include full points before and after the mistake so setup and recovery can be evaluated.
Mount the camera as high as possible on the back fence — it shows depth, direction, and how the ball leaves the racquet.
The single most useful angle for stroke mechanics and contact point.
Captures the toss, shoulder turn, and the full kinetic chain.
Full points reveal patterns, decisions, and recovery — not just the swing.
@realtennisninja
New lessons cover tennis technique, biomechanics, equipment, grip, footwork, match strategy, and the common mistakes most players never fix.
Subscribe on YouTubeThe exact cues Coach Jay repeats on court every day — the shorthand his students know by heart. Learn the language, own the shot.
Tennis Ninja is the online coaching and analysis brand of Coach Jay. Local players in Palm Beach County & South Florida can request private, in-person instruction in addition to online tennis lessons and video analysis.
Ask About Private Lessons
See how Coach Jay coaches serious players chasing rankings, a college spot or prize money.
Priced for players who are grinding, not spending. Details on the Pro Track page.
See Pro TrackPlay real points with Coach Jay on camera and get your own footage and a free breakdown.
Challenge MeSend your video, get a clear technical breakdown, and start practicing with a real correction plan instead of guessing.
Serious competitor? See Pro Track.