Matthew Dahle
Matthew Dahle

Head Coach and Programmer

B.A. Physical Education and Sports Studies, Bethany College
CrossFit Level 1 & Level 2
CrossFit Kids
CrossFit Scaling
USAW Level 1

Precision Nutrition Level 1 Certification

Born and raised in the Burgh (Yinzer through and through),
Matt has spent a majority of his life competing in a variety of sports, and after playing collegiate football from 2006-2009 found himself without a training purpose. He then found CrossFit in 2011 after watching a rerun of the 2010 CrossFit Games, and has been coaching the sport since 2012.
Aside from being a coach, a husband, a dad, and an avid coffee drinker, Matt is also a full time Wellness coordinator and believes fitness training plays a vital role in the success of any program or person. He also strongly believes that while rap music may not make you stronger, it does make you lift more!
Coach Matt’s consistent upbeat and positive energy fosters a training environment at Mayview that allows people to overcome self-doubt or perceived limitations, in order to achieve their full potential.
“My favorite part about coaching is seeing people write on the PR board. It’s just as exciting and fulfilling as hitting a PR of my own.”

Christian Delgado
Christian Delgado

CrossFit Level 1

One of Mayview’s “OG” coaches, Christian came to us all the way from Temecula, California, where he was born and raised.

Before finding Crossfit, Christian described himself as a typical gym rat who worked out Monday through Friday.
“I knew I needed to change things up, and by chance I happened to see advertising for a local Crossfit gym. I went to a class and I’ve been hooked ever since.”
Christian’s been doing CrossFit for six years and has been coaching for five.

“Making people believe in themselves and showing them what they can achieve is what makes coaching so much fun and fulfilling for me.”

Christian is known for the compassion and kindness he shows towards others, as well as his sense of humor- always making someone laugh (including himself!) He brings a fun, light-hearted spirit to each class.

Fun fact you may not have known about Christian is that he’s a former bowler who holds a perfect game of 300 under his belt!

Favorite WOD: Helen
Favorite lift/movement: Clean and jerk

When he’s not doing Crossfit, Christian enjoys spending time with friends and family.

Lindsey Dietz
Lindsey Dietz

CrossFit Level 1

BS and Master’s Accounting & Business Administration – University of Pittsburgh

Lindsey was born and raised in the south hills of Pittsburgh.
Lindsey (aka “Dietz”) found CrossFit at the end of her college career, looking for something to fill the sports void that she had been missing.
“Having grown up playing sports like volleyball and swimming, I missed having that competitive camaraderie, and CrossFit gave me exactly that and so much more!”
After doing CrossFit for nearly 6 years, Lindsey finally took the plunge and got her L1 this past winter, and has transitioned from member to coach here at Mayview.
Beyond the whiteboard, you can also find Lindsey behind the scenes, coordinating all of our social [media] needs!
“Since joining, Crossfit Mayview has become my favorite place to be- my home, and the community has become my family. I’m so blessed and grateful to be apart of something so special.”
Favorite movement/WOD: Cleans, snatches, wallballs, dubs, too many to choose from!
Fun fact outside of the gym: I have vast taste in music – knowing all of the words to rap songs like “Notorious Thugs” to broadway songs like “La Vie Boheme” from Rent!
Favorite podcast: #IncreaseYourImpact.

Jen Worstell
Jen Worstell

CrossFit Level 1

Kevin McGuire
Kevin McGuire

CrossFit Level 1

I got into CrossFit because my wife and I needed to make exercising a part of our lives again after putting it off for 2 years. We wanted to try something that changed daily but also didn’t take up an entire evening. On a whim we joined a box up the street from our house and started our journey by going to a 6am class. The workout was Annie which is Double Unders and Sit-Ups. I never would’ve thought those 2 exercises could be so difficult until I was timing myself. The workout itself was brutally difficult but the atmosphere of the class was what made us come back the next day even though one of us might’ve thrown up post WOD. After that day which was almost 5 years ago we were hooked for life. Being able to enjoy it with her by my side is one of my favorite parts of CrossFit. What I get most out of coaching is seeing the athletes successes. Whether it is improving a time, lift, or finally getting a movement. The satisfaction of knowing that you helped them getting there makes it worth every moment.
Favorite movement is Wallballs so obviously favorite workout is Karen
Hobbies outside of the gym are cooking and playing with my 2 boys Cole and Connor.
Fun fact: I’ve gone skydiving even though at the time I was terrified of heights… not anymore

Briana Chilleo
Briana Chilleo

CrossFit Level 1

Licensed Veterinary Nurse

Licensed Veterinary Nurse

Bri was born and raised in Pittsburgh, PA and lived in Florida for a short part of her childhood. Bri danced for about 12 years and played varsity women’s lacrosse in High School. Crossfit became a new sport for Bri when going to the gym alone became monotonous. “I simply was bored. I would maybe stay for an hour and never saw any changes.” The constantly varied movements, high intensity workouts, and the community is everything Bri wanted and found in Crossfit. “I love good fun competition, and pushing myself beyond what I thought I could do.”
Bri has recently transitioned from being a member to a L1 Coach at Crossfit Mayview. Bri was inspired and encouraged by fellow members to get her L1. “I never thought this was what I wanted to do. I always laughed when told that I should become a coach.” Bri is easy to spot in the gym; she is always laughing, dancing, or both.
When Bri is not at the gym, she enjoys anything and everything from the Marvel Universe, reading books, dirt bike riding, and spending time with her friends, family, and animals. Bri loves all animals – fur, feathered, or scaled. When she is not in the Burgh, you can usually find her on a beach or somewhere warm.
“My favorite thing about Crossfit is watching people crush their goals and hitting PRs. I love all the hype and excitement. I get just as excited as they do!”
FAVORITE WOD: Grace & Diane
FAVORITE MOVEMENT: Clean and jerk. Anything with a barbell!!
FAVORITE CF ATHLETE: Annie Thorisdottir, hands down.

Melissa Ondesko

BS University of Pittsburgh Clinical Dietetics and Nutrition
CrossFit Level 1
CrossFit Weightlifting
CrossFit Gymnastics

Melissa has been active through her whole life, participating in track and competitive cheerleading in high school. At the University of Pittsburgh, she discovered weight training and a joy in instructing others on their fitness journey. She taught aerobics classes through college to earn some spending cash while pursuing her degree in Clinical Dietetics and Nutrition and has taught near every type of class imaginable, from Aerobics, Boot Camp, Pilates, Spinning to Zumba (yes, Zumba). Her 20+ year journey through fitness began in group fitness instructor and grew into fitness management.
“Had I not worked in fitness all these years, I’d never had come across Crossfit. That word kept popping up in industry literature, and I decided to see what it was all about. I started Crossfit in November of 2012, and within a few workouts, I was hooked. It renewed my love of fitness and re-inspired my desire to teach others. Two years after starting as a participant, it was natural that I would want to become a coach so that I could share this amazing discipline with others. The Crossfit methodology is amazing, and I continue to enjoy learning and expanding my areas of focus. My goal in life is to help people feel better and do better. The success of those who I have the privilege to coach are as celebratory to me as they are to them! ”
Having an endurance background, Melissa enjoys a good Metcon WOD, and loves weightlifting complexes though she claims they will always be a “work in progress”. Outside of Crossfit, she enjoys running, road cycling, yoga, and kettlebell workouts. She enjoys hanging out with her pets, going on cruises with her husband Bryan, finding great music, going to the theater with friends, and growing plants and flowers indoors and outdoors. Her full time job is running the office for her husband’s electrical contracting business, but she will always be involved in fitness, her first love.

Bj Boering
Bj BoeringOwner

Bachelor’s of Social Work – University of Alabama.
Roll Tide!

 Originally from Mississippi but a Pittsburgh local for the last 11 years, BJ found Crossfit at the age of 45 after some encouragement from her family, and has been a fan ever since.
“It was intimidating at first but quickly became my favorite place to be, and I’m the strongest I’ve ever been.”
When she’s not at the box, BJ loves spending time with her husband and two kids, who also participate in Mayview’s Teen classes.
“The thing I love most about CrossFit is watching members do things they never thought possible when they first walked into the box.”
BJ and her family have built such a strong community at Mayview in such a short amount of time- the positive, upbeat, and welcoming energy that’s been instilled in the gym has been contagious.
“Being a part of the Mayview community brings me great joy and I truly feel privileged to be a part of it.”
We are so grateful to have BJ and her family lead our community – Many thanks for all that she does!