

ABOUT US
M.70 is an individually focused, bespoke management company derived from a belief in the power of collaboration.
Our philosophy is simple. Progress through process.
In no other mainstream sport do top athletes coach, train and manage themselves.
We make it our mission to achieve our athletes' goals by working collaboratively and cultivating the ability to successfully perform at the highest level.
A CUT ABOVE
Founded in 2025 by Chris Sorensen, Sean Crooks and Harrie Smolders, M.70 High Performance is a unique, world class management team, aimed at supporting athletes who wish to reach the highest levels of show jumping. This unique coming together of these three experts in their field gives access to an unrivalled wealth of experience, a vast and personal network and decades of proven results both in and out of the show ring.
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There is no other combination like it.

EQUESTRIAN CONCEIRGE
Completely bespoke, tailored to each athlete and their goals and dreams - because we understand that being the best version of yourself requires a 360°, holistic approach, founded in trust, experience and passion.
TRANSATLANTIC
Expertise in bridging the gap between the USA and Europe, with access to the best facilities, best staff and best horses - we are positioned to help you compete seamlessly around the world.
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Consistency is key. So whether it's a place to stay, support in planning the optimum season or the full works with everything at your fingertips, we can help.
DATA, EXPERTISE, EXPERIENCE
Knowledge is power and while data and science will never replace good horsemanship or the insights of professionals in the equestrian world, those who use these tools to support and enhance their understanding will have an advantage over competitors.
We are committed to using data and evidence-based methods to elevate horse welfare and performance to the next level.
PERFECT PARTNERSHIPS
The partnership between horse and rider is fundamental to everything we do - once that bond and understanding is formed, anything is possible. An outside eye, a deep knowledge and passion for horses and always the truth; our aim is to help athlete and equine perform together at the highest level.
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And if you're still searching for your heart horse, our network, experience and own breeding programmes can help find your perfect match.

TESTIMONIALS
"The basics, tradition, modernity and the fierce desire to shine are some of the elements that make the success of Sean Crooks, whose coaching qualities still have bright days ahead of them."
Mélina Massias , Stud for Life
"Sean not only bettered the physical aspect of my riding, but also helped to mature my mentality as an athlete. He has taught me when to persevere but also when to back down, how to win but also how to lose, when to be critical of myself but also when to praise my efforts. All of the aforementioned does not even include the tangible skills he has instilled. His support has helped me more than I can repay him for, but I hope our results have been and will continue to be evidence of a thriving collaboration"
Ioli Mytilineou
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