Sports Performance Personal Trainer in San Francisco
Whether you're a competitive athlete looking to gain an edge over the competition, a weekend warrior trying to keep up with your sport, or a teen athlete building the foundation for years ahead, performance training should be built around your sport, your body, and your specific goals — not a generic program borrowed from someone else's training plan.
Training Built Around Your Sport
No two athletes need the same program. A competitive martial artist needs explosive rotational power and fast-twitch speed. A weekend runner needs durability and efficient movement patterns. A teen athlete needs a foundation that supports long-term development without overtraining.
I assess your sport's specific demands — the movements, the energy systems, the common injury patterns — and build a program that directly transfers to your performance on the field, court, mat, or course.
What Sports Performance Training Includes
Speed & explosiveness — for athletes who need to move faster and generate more power, whether that's a first step, a jump, or a strike.
Strength & power development — building a strong foundation that supports every other physical quality your sport demands.
Injury prevention — identifying and correcting the imbalances and weaknesses that lead to the most common injuries in your sport.
Sport-specific conditioning — training the energy systems your sport actually uses, so your fitness translates directly to competition or play.
Real Results From Real Clients
"I am a competitive martial artist who needed to ramp up my training with additional strength and speed. The results were that the exercises activated my fast twitch muscles — I actually became faster in my forms. He knew how much I could take and gave me a tad more to push me."
— Patricia L., Sports Performance Client
"As a former athlete who is now out of shape, Marcellis has been encouraging and helpful in pushing me just enough. Best trainer I've ever had."
— Zoe M., In-Person & Online Client
How We Get Started
We'll start with a free consultation to talk through your sport, your current level, your goals, and any injury history. From there I'll build a program specifically designed around what your sport demands and where you want to go.
Frequently Asked Questions
Do you train athletes at every level, or just competitive athletes?
Every level — from teens just getting into a sport, to weekend recreational athletes, to competitive and semi-pro athletes. Programming is always tailored to where you currently are.
Can this help me avoid injuries in my sport?
Yes — injury prevention is a core part of sports performance training. By identifying imbalances and building strength in the right places, we reduce the load on the areas most prone to injury in your specific sport.
What sports do you have experience training for?
My background includes basketball coaching and athlete development, along with training clients across combat sports, running, rotational sports, and general athletic conditioning. Programming principles apply across most sports, tailored to the specific demands of yours.
Is online coaching effective for sports performance training?
Yes, particularly for programming, strength work, and conditioning. Some sport-specific technical work is best done in person, which we can incorporate for local San Francisco clients.