Oceanside Athletic Club

Get to Know Coach Sergio 🥊

Coach Sergio Espero is a dedicated boxing coach who brings experience, discipline, and heart to every class. Outside the gym, he’s a father of five, a union carpenter, and a chaplain/minister — a leader who lives what he teaches both in and out of the ring.

Sergio began boxing at 13, competing as an amateur in Northern California before stepping into the Southern California scene. After years in the ring — including competing again in his 30s — he transitioned into coaching, where he’s spent five years developing athletes inside and outside the ropes.

Beyond boxing, he’s spent 20 years sponsoring individuals in AA and has experience supporting mental health alongside doctors and counselors. Reflection, forgiveness, generosity, and kindness aren’t just words to him — they’re how he lives.

At OAC, his mission is simple: build strong, confident athletes and even stronger human beings — passing down discipline, compassion, and leadership to the next generation.
Catch him in the 5pm & 6pm youth and adult boxing classes. He’s also available for private training if you’re ready to level up.

Drop a 🥊 below to show Coach Sergio some love!