Our Staff

Olivia Graff - Owner & Coach


Instagram: @ohshitcrossfit

Olivia's athletic origins lie in gymnastics and circus arts. After finding CrossFit in 2007, she became obsessed, and three years later left her IT career and opened United Barbell.

Olivia is particularly passionate about helping people who are new to fitness find joy in their growing athletic abilities. Since the birth of her daughter in 2013, Olivia can add helping little ones find their athletic path to her list of passions.

Olivia is a cyclist and is currently focused on training for the cyclocross season and the 2019 Death Ride.

Certified CrossFit Level 2 Trainer
USA Weightlifting Sports Performance Coach
Mobility|WOD Functional Training for Adaptive Athletes
CrossFit Adaptive Training
CrossFit Aerobic Capacity
CrossFit Olympic Weightlifting
CrossFit Movement & Mobility
CrossFit Football
CrossFit Kids
CrossFit Powerlifting

Jason Luk - CrossFit Coach


Instagram: @coachjasonluk

Jason has been CrossFitting for nine years and joined United Barbell after he moved to the city in September 2012 transferring from CrossFit Milpitas.  A former Cross Country and Track Runner, he remains a competitive athlete with his first competition being the 2008 CrossFit Games and has been diving into local competitions as well as entering in The Open every year.

Outside of the gym, Jason is a Wellness Ambassador at AOL where he coordinates healthy office programs and also provides one on one coaching for high-performing individuals who seek to overcome plateaus in certain areas of their life whether it be eating, exercise, sleep, stress or more.  He's committed to helping clients grow into their full potential to lead fulfilled and driven lives after having overcome corporate burnout himself.

Certified CrossFit Level 2 Trainer
Certified Wellness Coach

Lisa Reither - CrossFit Coach


Instagram: @lisareither

More about Lisa soon!

Certified CrossFit Level 1 Trainer

Dave Huynh - Olympic Lifting Coach


Instagram: @deebeau

Dave was a high school distance runner and tennis player. Ironically, he does neither of these sports anymore, and is a dedicated competitive Olympic weightlifter. His current goal is qualifying for the American Open.

While in grad school, Dave discovered CrossFit after getting a coupon handed to him. He joined United Barbell as an athlete in 2012 and fell in love with the community, making UB his home away from home. After completing much of his CrossFit certifications for his own personal development, Dave decided to embark upon UB's internship program and become one of our resident Oly coaches, moonlighting as "CrossFit Dave" once year during the CrossFit Open.

Certified CrossFit Level 2 Trainer
USA Weightlifting Sports Performance Coach
Masters Olympic Weightlifting Programming with Zygmunt Smalcerz

Jonathan Ly - CrossFit Coach


Instagram: @jonlyfitness

Jonathan Ly - CrossFit Coach

Jon has been involved in the fitness industry for over 12 years. His first experienced CrossFit after being convinced to do the CrossFit Open in 2016. Having never done CrossFit before, he had to scale most of the workouts and was crushed by all of them. The challenge of the movements, skills, and unpredictability has kept him coming back for more ever since.

Certified CrossFit Level 1 Trainer

Liran Krell - CrossFit Coach


Liran is a former Israeli Defense Special Forces soldier who was involved in sports - so when he found CrossFit, it was a perfect match! Three years after he started CrossFitting he left his engineering career to become a full time coach.

Liran specializes in gymnastics, but enjoys keeping a well rounded program through CrossFit. His goal is to help athletes move better and feel comfortable being uncomfortable. 

Certified CrossFit Level 2 Trainer
USA Weightlifting Level 1 Coach
CrossFit Spot the Flaw Course CrossFit Scaling Course
CrossFit Lesson Planning Course

Jackeline Rodriguez - Admin, Ray of Sunshine


Jackie is an SF native and former cheerleading athlete who sidelined her fitness until she discovered CrossFit. At first she was intimidated but with the support of her co-workers is now proud to call herself a CrossFit athlete!

In her spare time Jackie enjoys visiting art galleries, museums, traveling, and always living her best life.