BS Secondary Education, KSU

John grew up in Overland Park, KS and graduated from KSU in 2005 with a teaching degree. John had shoulder and elbow surgeries in consecutive years during college, so while his peers were busy playing ball he had to pick up coaching to stay in the game. His interest in fitness started in middle school with his fascination of bodybuilding and that continued throughout his teens and 20s.

After two years of teaching and coaching, John spent seven years in outside sales. As the sports performance industry emerged in the past decade John finally saw an opportunity to open his fitness business; perfect background of teaching, coaching, and fitness in the perfect town to do it. Renzi Performance & Wellness started in 2013 with a handful of softball players and a few of John’s friends as his clients and within three years he had established himself as one of the most trusted sources in town for baseball and softball training. John and Matt met in 2015 and quickly realized the similarities in their training philosophies, and knew right off the bat they would be better off working with each other than competing. In 2016 they formed a partnership to create KCSC. 

B.s. Health & Human Performance - Emporia State University

Matt is the co-founder of Kansas City Strength & Conditioning. Matt began his career in the fitness industry while studying as an undergraduate at Emporia State University, where he earned his degree in Health Promotion. While at Emporia State, Matt was a pitcher where he was a vital part of the 2014 MIAA Conference Championship Team, the 2015 MIAA Conference Runner-Up Team and a participant in two NCAA Division II Regional Tournaments.

Upon graduating from ESU, he trained and completed an internship at Cressey Sports Performance in Jupiter, Florida during the summer of 2015. While in Florida, Matt was able to work with a large number of high level collegiate athletes, several MILB/ MLB players, some NFL talent and even a PGA golfer.

At the conclusion of Matt's internship with CSP, he moved back to Kansas City, and began working as the Strength & Conditioning Coordinator at Premier Baseball KC. After a year Matt teamed up with John Renzi to form Kansas City Strength & Conditioning. matt takes a very detail-oriented approach to assessing athletes individual needs, arm care prescription and exercise selection and execution.

MS Nutrition and Dietetics - University of Kansas MEdical Center

B.S. Nutrition and Dietetics - Saint Louis University

Mary Kate grew up in Saint Louis, Missouri, and moved to the Kansas City area to complete her masters degree and dietetic internship. Growing up, Mary Kate’s athletic experience came from competitive volleyball. During high school, she started to be able to see how taking care of the body through speed and strength training & fueling the body through nutrition can enhance performance.

During her Dietetic Internship she worked as a Graduate Assistant at KU athletic department which allowed her to practice as a sports dietitian in Division 1 athletics. This role led her to become part of our team at KCSC as a trainer and dietitian.

B.S. Kinesiology - University of central missouri

After graduating from Lee’s Summit High School, Bree attended Longview Community College, then graduated from University of Central Missouri with B.S. in Kinesiology. In college she served as an athletic trainer and an assistant high school track and field coach.

Bree’s current focus is Olympic lifting, and she will compete in her first competition in July 2024. Growing up, Bree’s athletic experience was developed mostly from competitive dance. She was a cheerleader for the KC Comets for two years and is a current member of the KC Current Hype Crew.