We help players play their best tennis

#1 Tennis Fitness Training Center in New Jersey

We help players play their best tennis

#1 Tennis Fitness Training Center in New Jersey

  • Increase Power in your shots

  • Develop better footwork

  • Reduce risks of injuries

  • Increase Power in your shots

  • Develop better footwork

  • Reduce risks of injuries

Do you need to move better and reduce risk of injuries on the tennis court?

Feeling slow on the court or you can't last the set

You are worried you could get hurt

Do you feel like your tennis level could be so much better if you were only in better tennis-shape

Play the best tennis of your life

You are losing matches you know you could win

Don't play all out

Your confidence will improve, you will win more matches with Inside Out Tennis Fitness Program.

Get started on your fitness journey now

Book Free Call

Book a free discovery call with your coach today

Schedule Tennis Strong

Schedule your Tennis Strong and experience working with our team

Transform

Begin your fitness journey with our Inside Out Tennis Fitness Program Program

Get started on your fitness journey now

Book Free Call

Book a free discovery call with your coach today

Schedule Tennis Strong

Schedule your Tennis Strong and commit to success

Transform

Begin your fitness journey with our Inside Out Tennis Fitness Program Program

About Donald Shrump Jr. and Magnus Sports Performance

Dr. Donald Shrump’s journey into the world of sports performance and health optimization was forged from a relentless curiosity about human potential—and a deep desire to solve the problems most people didn’t know how to articulate, let alone fix.

As a young athlete with Olympic dreams, he became obsessed with not just how to perform better, but how to recover faster, feel sharper, and live longer doing what he loved. He saw the gaps: injuries that were mismanaged, nutrition that was outdated, and training that was one-size-fits-all. And he knew he could build something smarter.

What started as personal experimentation turned into a mission. Of of undergraduate school, he was a Marine Biologist for NOAA, but was always curious about human performance. He added strength and conditioning because movement, when programmed right, becomes medicine. After years of being a strength coach, he pursued chiropractic medicine not just to treat pain, but to optimize the nervous system—the command center of the body. He dove into a Masters of Nutrition because fuel quality determines how hard you can push and how fast you bounce back. And he studied sports science because elite performance isn’t just about training—it’s about data-driven, biologically-aligned strategy.

Now, with over two decades of experience, Dr. Shrump has become a high-performance health specialist for top athletes, executives, and ambitious individuals who want to own their health like they own their careers. His philosophy is rooted in precision—custom protocols built from circadian biology, mitochondrial science, and real-time metrics.

The drive hasn’t changed. He’s still the kid asking why, still solving puzzles others ignore. Only now, he’s doing it at the highest level, helping people go from “normal” to next-level—and stay there.

Donald Shrump Jr.

Certifications and endorsements:

Magnus Sports Performance Location

195 County Road, Tenafly New Jersey 07670

195 County Rd, Tenafly, NJ 07670, USA

What clients say about us

Frequently Asked Questions

How will you know how to design the best program for me?

All our clients start with a comprehensive evaluation, so we know just what level to start you at.

Is there cardio in your program?

Yes, all clients are recommended bespoke cardio with a Polar Heart Rate Monitor, Whoop, or Garmin device.

A

Do you have a shower?

Yes, we have locker rooms with showers and towel service.

A

Do you include Nutrition Counseling Services?

Yes, we have multiple nutritionists, dietician, and Functional Medicine Specialists.

A

I have an old injury, should I see my doctor before reaching out?

It depends, Dr. Donald Shrump can always evaluate your injury concerns and address where to start your program.

A

Don't let another season at the club go by without being in tennis shape

Contact Us

+17325811362

donald.s@magnussp.com

195 County Road, Tenafly New Jersey 07670

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