Staff

Owner, Director

Casey Tiesman

224-677-6958

A native of Morrison, Ill., Casey graduated from the University of Illinois at Chicago and the University of North Dakota, earning his Bachelor’s and Master’s degree in Kinesiology. He began his collegiate coaching career while attending the University of Illinois at Chicago (UIC), where he interned under Nick Zostautas and assisted with the coaching of a variety of teams and professional athletes training in the off-season and in-season.

Casey continued his education while working as a Graduate Assistant for the University of North Dakota and head strength coach, Nate Baukol. Serving as the Strength & Conditioning coach for the Baseball and Softball teams, he also had the opportunity to work with the Football, Basketball, Track and Field, and Swimming programs.

After years of coaching and developing his craft, Casey chose to open a facility for athletes of all ages and skill levels to develop in a safe, energetic, and competitive environment. With a dedicated staff that is driven by the success of the athletes and the fantastic lifelong relationships that are created, the Tactic Sports Performance experience was born and continues to cultivate not only outstanding athletes but exceptional individuals!

Casey is a certified member of the National Strength and Conditioning Association, a USA Weightlifting Level 1 Sports Performance Coach, and is Titleist Performance Institute Fitness certified.

Head Coach

Peyton Seidler

224-677-6958

Peyton Seidler is a highly skilled sports performance coach specializing in strength and conditioning, speed, and agility training. With a strong educational foundation in kinesiology and exercise science, Peyton has developed a deep understanding of how to optimize athletic performance. His background as a competitive athlete fuels his passion for helping athletes of all levels maximize their potential.

Peyton played multiple sports throughout his high school and collegiate career, excelling in football and baseball. His personal experiences in competitive athletics have equipped him with firsthand knowledge of what it takes to succeed in high-pressure environments.

As a coach at Tactic Sports Performance, Peyton works closely with athletes ranging from youth to high school, designing tailored programs that focus on strength development, speed, and injury prevention. His coaching philosophy emphasizes not only physical performance but also mental toughness and resilience, helping athletes build confidence on and off the field. Peyton’s expertise has made him a trusted coach for athletes looking to enhance their overall athleticism, power, and endurance.
By combining his education, competitive background, and coaching experience, Peyton is dedicated to elevating the athletic performance of every individual he works with at Tactic Sports Performance.

Coach

Eric Lelo

224-677-6958

Originally from Park Ridge, IL, I bring a unique blend of education and athletic experience to the field of sports performance. I graduated from the University of Illinois Urbana-Champaign in 2023 and went on to continue my studies at the South Dakota School of Mines, where I also played Division II college football. My passion lies in helping athletes break through perceived limits to reach new heights in their performance.

With specialized expertise in plyometrics, lower body health, and injury prevention, I focus on adapting my coaching to each athlete’s individual needs rather than a one-size-fits-all approach. This personalized style allows me to effectively guide athletes in overcoming physical challenges and achieving their full potential.

Coach

Conor Deal

224-677-6958

With nearly a decade of experience as a Sports Performance and Strength & Conditioning Coach, I have worked with athletes across all sports and levels, with a particular specialization in strength and power-based sports. I hold both a Bachelor’s and Master’s degree from Loyola University Chicago (LUC) and have a strong background in sports performance theory, including non-contact injury reduction and velocity-based training.

Currently, I serve as an adjunct professor at Loyola University Chicago, teaching exercise science courses and contributing to performance-based research. My athletic background includes playing football and baseball from my youth through my 20s and competitive powerlifting in my late 20s and 30s. One of my proudest achievements is coaching a high school powerlifting team to a 2nd place finish and setting multiple state records at the state level in my final year.

Passionate about optimizing athletic performance, reducing injury, and dedicated to ongoing education, I bring a comprehensive, nuanced, and evidence-based approach to coaching and training.

Staff

Owner, Director

Casey Tiesman

224-677-6958

Head Coach

Peyton Seidler

224-677-6958

Coach

Eric Lelo

224-677-6958

Conor Deal

224-677-6958

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