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Meet the Team

Meet the Strength and Conditioning Team!

Casey Tiesman, Sports Performance Manager
A native of Morrison, Ill., Tiesman graduated from UND in 2013 with his Master’s in Kinesiology. He began his 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. Casey has also worked with multiple Major League Baseball players and female National Rugby players during his tenure as an intern. Additionally, in his final year at UIC, Casey helped research, analyze, and design a new physical training regimen for the university's military ROTC program. From there, he worked for the University of North Dakota, where he was the Strength & Conditioning coach for the Baseball and Softball teams. During his time he helped the baseball team improve in every facet of their athleticism and mental toughness. The team finished the season with the most wins in their Division 1 era. He also had the opportunity to work with the Football, Basketball, Track and Field, and Swimming programs.

Casey has recently joined the Bulls/Sox Academy staff from previously working with one of the largest private sports performance facilities in the nation, EXOS (Formerly called Athlete’s Performance).  Tiesman is certified and a member of the National Strength and Conditioning Association, along with being a USA Weightlifting Level 1 Sports Performance Coach. He also served in the United States Marine Corps for 5 years and was deployed on two tours of duty in Iraq.

Jimmy Slater, Strength and Conditioning Coach
Jimmy graduated from the University of Illinois at Chicago (UIC) with his Bachelor's Degree in Kinesiology.  As a Strength and Conditioning coach Jimmy has worked at several sports performance training facilities in the Chicago land area, including The Academy of Athletic Advancement (Mt. Prospect, IL) and Athletic Republic (Libertyville, IL). .  He has worked with elite college and professional level athletes of numerous sports including; Football, Baseball, Softball, Volleyball, Basketball, and Track. He has also held the position of Strength and Conditioning Coach for a local high school where he designed and implemented a new strength and conditioning program

Jimmy is a Certified Strength and Conditioning Coach through the National Strength and Conditioning Association, a USA Weightlifting Level 1 Sports Performance Coach, and Certified Personal Trainer.  Prior to his coaching career, Jimmy served in the US Army during which time he was deployed to Afghanistan in support of Operation Enduring Freedom.

Gio Piediscalzi, Strength and Conditioning Coach
Gio graduated from Southern Illinois University with his Bachelor's degree in Exercise Science and
is a Certified Strength and Conditioning Coach through the NSCA and has two Personal Training Certifications. During his SIU career he was in charge of the Fitness Club and worked as a personal trainer for cancer patients. Additionally, Gio was player and then coach for the SIU Club Soccer team. Prior to his coaching career, he played soccer at South Suburban College and Semi-pro Indoor Soccer for the SI Blast. As a former trainer at the Academy of Athletic Advancement, he gained hands-on experience training elite high school and college athletes.

Gio is excited to train the youth athletes of the Bulls/Sox Academy Strength and Conditioning program at both our La Grange and Glen Ellyn locations with the mantra:

"Be determined to persist until you succeed. It's the small extra things, the little repeated attempts, that soon add up to accomplishment."


Cheryl Smith, Strength & Conditioning Intern
Cheryl will be graduating this June from the University of Iowa with a Bachelor’s degree in Exercise Science. She hopes to go on to graduate school to pursue a Master’s in kinesiology. During the first two years of college, Cheryl was a part of the Women’s rowing team, prior to college she participated in softball and basketball.












As the new Sports Performance Manager, I want to take the opportunity to introduce myself and explain my training philosophy. I feel it is important for you to understand my background and how I plan on maximizing your potential.

I was born and raised in the small town of Morrison, Illinois. I was involved in nearly every sport possible growing up, including football, baseball, basketball, soccer, swimming, golf, and even gymnastics. After high school, I enlisted in the United States Marine Corps and served 5 years honorably. During that time I was stationed primarily in Camp Pendleton, CA and completed two combat tours to Iraq. After completing my time with the Marines I moved back to Chicago and attended the University of Illinois at Chicago and earned my Bachelors of Science in Kinesiology. I worked with the UIC Strength and Conditioning staff and assisted with the coaching of many teams and MLB professionals training in the off-season. Following my time at UIC, I earned my Master’s degree in Kinesiology from the University of North Dakota. I served as the Assistant Strength and Conditioning Coach for baseball and softball, while assisting with football and a wide variety of other sports.

My training philosophy and the philosophy of the program is simple. First and foremost, the Performance Specialists and I are not sport coaches. We do not coach how to throw a curve ball or shoot a jump shot. As the Sports Performance Manager, it is my responsibility and my team of Performance Specialists responsibility to prepare your body for the rigors of your specific sport so that you gain a competitive edge over the competition while at the same time, minimize your risk of injury through the course of a season and throughout the year. We do this by utilizing our experience, education, and the most current evidence based scientific research to write our training programs and methodologies to maximize your athletic potential safely and effectively. We train Athleticism and all of its components: power, strength, speed, agility, flexibility, and coordination.

I believe that with a combination of coaching in your specific sport and proper coaching in strength and conditioning, you will begin to unlock and see what your true potential can be. As a Bulls / Sox Academy Athlete you have shown that you are serious about your athletic development. In sports today, elite athletes are not only extremely talented, but they are bigger, faster, and stronger than their peers. If you are serious about your athletic development, then let my Sports Performance staff take you to the next level.