Stevie Winchester

Head Coach

Stevie joined Paul Bunyan in 2014 as a member, developing a passion for the community and coaching shortly after. She played competitive sports through college, which allowed her to apply the fundamentals of fitness, nutrition, recovery, hydration, etc. to performance and everyday life, drawing her into the CrossFit methodology once her athletic days came to an end. Paul Bunyan became her new “team” to workout alongside of and get better with. She is a Head Coach for both adults and for our CrossFit Kids program, believing that you are never too young and it is never too late to apply the same principles of health and wellness to your life. When she is not in the gym, you can find her out and about spending time with her two chocolate labs and her friends and family.  Stevie is Crossfit Level 2 Certified (CF-L2)

Sean Brophy


Sean joined Paul Bunyan in 2019 as a Coach. Having grown up wrestling, Sean discovered CrossFit in 2014 as a method of preparing for his college wrestling tournaments. Since graduation, Sean has worked at numerous CrossFit facilities in Pennsylvania and New Jersey. He coaches a variety of classes, including Fitness in 45, Endurance and CrossFit Kids.

Tom Flaherty


Tom started CrossFit in 2016 as an athlete, and transitioned careers to start coaching full time in 2017. He made his way to Paul Bunyan in 2019. He grew up playing soccer and baseball, and has spent much of his life in the gym.

Tom does a lot of private training in addition to coaching classes at the gym, including individual sessions and small groups. Tom works with all ages and backgrounds, and even competitive athletes.

In his free time, Tom enjoys cooking, going to the beach, and spending time with his family and pets.

Tom is Crossfit Level 2 Certified (CF-L2)

Tori Grimm


Tori joined Paul Bunyan in 2019. Tori played a variety of sports growing up and the gym was always a happy place. After discovering CrossFit in 2017, Tori decided to get her CrossFit certification, wanting to share her passion for fitness, while helping people create the best version of themselves. Tori graduated from St. Joe’s University with a degree in Marketing and now owns owns a women’s clothing store, Co Chic Boutique, in Ardmore, PA.

She is CrossFit Level 1 Certified (CF-L1)

Chaz Dembrosky


Chaz joined Paul Bunyan in 2014 as a member but then transitioned into a Coach in early 2015. He has spent most of his life in the fitness industry, and was previously a 2-sport athlete in baseball and basketball. He graduated from Eastern University with a degree in Exercise Science. Upon graduation, he became an Exercise Physiologist in skilled nursing facilities. Realizing his additional passion for teaching, Chaz then changed careers and went into public education, while continuing to pursue fitness and coach at Paul Bunyan.

In his free time, he travels with his wife and takes care of his two pets, a dog named Ella and a cat named Vivi. Chaz coaches Rowing, CrossFit and general Fitness classes.

Chaz is Crossfit Level 1 Certified (CF-L1)

Alex Diggory

CSCS, Co-Owner of Atlas Peak Performance

Alex is the Co-owner of Atlas Peak Performance. He has 10 years of experience in both the private and collegiate settings, having graduated from West Chester University with a degree in Kinesiology. He started the S&C program at West Chester for Football and Men and Women’s Track and Field teams. He played Rugby for West Chester and semi-professionally for the Chicago Griffins Men’s Rugby Club.

He has his CSCS and is USAW-Level 1 and USATF-Level 1 Certified.

Brendan Erne

CSCS, Co-Owner of Atlas Peak Performance

Brendan is Co-Owner & Associate Director of Strength and Conditioning and has 8 years’ experience in the sports performance industry. Previously, Brendan was an assistant S&C coach at Liberty University working with more than a dozen varsity teams, including track, baseball, tennis and lacrosse. He also worked at a private Athlete Performance facility where he was the Director of Sports Performance. He has his Bachelor’s in Exercise Science from University of Delaware and earned his Masters’ in Human Performance from Liberty University.

Brendan is a Certified Strength and Conditioning Specialist (CSCS).

Mitch Clemens

CSCS, Head of Strength & Conditioning 

Mitch currently serves as an Assistant Strength and Conditioning Coach with APP. Prior to joining APP, he was an intern at Cressey Sports Performance-Massachusetts, having had the opportunity to learn from some of the most elite professionals in the industry. Additionally, Mitch has extensive experience in the collegiate sector at the Division I level. He was a Graduate Assistant Strength & Conditioning coach at Mount St. Mary’s University (MD) where he was responsible for the design an implementation of strength and conditioning programs for multiple Division I teams.Mitch received his Bachelor’s in Exercise Science from Marywood University and Masters in Sports Management from Mount St. Mary’s. While at Marywood, he was a four-year starter as an infielder for the baseball team. 

He is a Certified Strength and Conditioning Specialist (CSCS).

Jordan DiValerio

Head of Pitching

Jordan serves as the Head of Pitching for Atlas Peak Performance. He is a pitcher for the Boston Red Sox organization. Jordan graduated from Saint Joseph’s University with a B.S. in Psychology and was a S&C Intern for 3 years while in undergrad. He is an ACE Certified Personal Trainer. He was also 2020 A-10 Pitcher of the Year, 6 Time Big 5 Pitcher of the Week and 2 Time A-10 Pitcher of the Week.