TESTIMONIALS
PROVEN RESULTS.
REAL ATHLETES.
See why 1,000+ athletes have trusted Coach Keil’s system (SportStrength) to increase speed, strength, and confidence.
WHAT PEOPLE ARE SAYING
Reviews from athletes, coaches, and parents
“My daughter absolutely loves coming to Sport Strength! The coaches were encouraging, knowledgeable, and made every session both challenging and fun. We saw a huge improvement in her confidence, coordination, and overall athletic ability. Highly recommend for any child wanting to build strength, speed, and confidence!”
Alicia M.
PARENT
“Mark is someone who will transform your weaknesses into strengths. His ability to do this has allowed me to see what I’m truly capable of achieving and more.”
Xavier ‘X’
FORMER PITCHER
“I believe Mark has the athlete’s best interest in mind. He has the ‘know how’ and the feel to bring about the best in athletes.”
Matt W.
CATCHER
“[Mark] helped me in multiple different ways. I felt more confident as a person and as a ball player. … Coming back from arm surgery I wasn’t sure where my arm strength would be, but [Mark] helped me get back to the point I wanted to be at and stronger. [Mark] helped me gain my confidence back encouraging me along the way. I’m thankful for [Mark] helping me be the athlete I am today.”
Keitian B.
SOFTBALL ATHLETE
“Mark has trained both of our boys (6 and 9 Years old). Their techniques have improved dramatically! He is a great coach and very knowledgeable! We have enjoyed speed and agility with him and will recommend him to anyone in the Tulsa area!”
Julie D.
PARENT
“Exceptional Coach and Trainer!
Both of my kids (ages 7 and 8) started working with Coach Mark after their spring sports season and continued through the start of football. The improvement in their running technique and overall form has been incredible. Just yesterday, one of their coaches even commented on how much faster my son looks this season!
Coach Mark is patient, knowledgeable, and truly invested in helping young athletes grow. I really appreciate the time and effort he’s dedicated to my kids, and the results speak for themselves. I highly recommend him to any parent looking to help their child improve their athletic performance!”
Jessica W.
PARENT
“I played D1 Golf and have trained with some of the best. As I focus my attention on what’s next for me in golf, I am glad to have Mark. His program has helped increase my club head speed!”
Josh B.
Professional Golfer / Instructor
“Mark is great! I have a 5 & 7 year old in his class. He is very patient with them and has made a big difference with their running form, which has increased their speed and confidence.”
Kyle R.
PARENT
“I don’t usually leave a review, but this has been one of the most unforgettable customer service experiences I’ve ever had with a business. Mark was always timely, on time, and willing to go the extra mile for my kid.
Any parent that’s looking to take their kid to the next level to improve in the areas they see in regards to physical fitness or even mentally, Mark is knowledgeable enough and prepared to give you an experience that is worth it.
I’m very happy. I will be a repeat customer, and it was essentially glad to pay him for the services he provided for my child. And because of that, we are ahead of other kids in our same area and we thank Mark for that.”
Chris G.
PARENT
“Training with Mark gave me so much more confidence going into my senior season. I am hitting the ball harder and my defense has improved due to all the speed work he had me do. I would not be having the success I am having without [this] training. Mark has pushed me to become a better athlete, physically and mentally.”
Karleigh B.
SOFTBALL ATHLETE
“Mark has helped my son to make huge strides (no pun intended) in his running ability. He’s reduced his 10 yard burst time by over half a second in the past year, helping both with explosiveness off the line as well as how to us his whole body to propel forward. Highly recommended whether youre a beginner or elite athlete.”
Lee A.
PARENT
“Mark was honestly one of my favorite lifting coaches because of the knowledge he had and the tireless effort he gave to make sure all my needs were fulfilled. He always had answers for me when I was questionable about something and if he didn’t know, he was going to find out for [me] right away. Not only was he a great teacher, he practiced what he preached and always went about his way in a very professional manner.”
Andro C.
Former Pitcher
“Coach Kiel worked with my son to work on speed. Specifically, baseball specific and explosive start from a baseball start. In just for first couple of weeks attending, his 10 yard split and his 60 improved markedly as well as his running technique. Thanks Coach!”
Michael L.
PARENT
“Mark is very knowledgeable and does excellent work. My son is benefiting tremendously from this training. Highly recommend!”
Zach M.
PARENT
“Would recommend this place and Mark over and over again! We trained for a short period of time during football season, and my son’s footwork increased tremendously. He went from one of the slowest kids on the team, to being able to keep up with the fast ones!! Thank you Mark! We will be back!!”
Kylie L.
PARENT
“I appreciate [Mark’s] ability to interact with each athlete on an individual basis to help me reach my own personal goals.”
Aaron S.
FORMER PITCHER
“Such a great place for speed and agility training. My son loves it and has definitely seen results with his speed during training sessions and during sports. Very much recommend!”
Robin A.
PARENT
“Coach Mark has been amazing for our son. He’s super friendly, really good with kids, and knows how to make training fun while still pushing them to improve. Our son made huge progress working with him. Mark creates a positive, encouraging environment that kids really respond to. We’re glad we found him and definitely recommend him to anyone looking for a great youth coach.”
J. F.
PARENT
YOUR ATHLETE'S STORY STARTS HERE.
Book a free, data-driven evaluation and see how fast your athlete can run.