WE TAKE PERFORMANCE SERIOUSLY
VISION
We will inspire and coach you through not only physical workouts designed to increase your overall athleticism and body composition, but also coach you through the mental skills necessary to increase your focus and make you a more competitive athlete.
COACHING
The coaching staff at TacticSP will be nothing short of extraordinary. Every coach will have received degrees in Kinesiology, Biomechanics, Sports Therapy, or Exercise Science and all staff will receive ongoing education of current topics, trends and research that will help keep us in the forefront of coaching. The coaching staff is dedicated to providing athletes with superior instruction, mentorship, and leadership at all times and at all levels. We will over-deliver and bleed passion to create an environment in which you can thrive.
PROGRAM
Training programs that prepare you for competition. Created with your age, training experience, sport and season in mind. Utilizing our experience and training to put you in the best position to be successful and accomplish your goals.
ENVIRONMENT
Each type of program should have its own identity and environment. From our youth classes which have a fun and engaging environment based around building foundational principles of human movement, to our advanced program that is more competitive and demanding.
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.
John Marcos
224-677-6958
John Marcos holds a Bachelor’s degree in Exercise Science from DePaul University, where he gained extensive hands-on experience through fitness assessments, program design, and working with injury rehabilitation. During his senior year, John completed an internship at Tactic Sports Performance, where he had the opportunity to shadow coaches and personally train athletes across various sports.
John has collaborated with Johnny Johnson in training the Lake Forest Scouts youth baseball team, running their speed and agility programs. His experience also includes implementing athletic performance training for youth soccer and basketball athletes.
John’s passion for fitness was ignited in high school, where he played football for all four years. His dedication to training and self-improvement deepened throughout his athletic journey, leading him to pursue a career where he can help athletes unlock their full potential. He brings this enthusiasm and expertise to every session, aiming to support each athlete in achieving their sports performance goals.