Congratulations, Alejandro “Under Construction” Rubi
From the ring to the stage, Alejandro just earned his high school diploma. The whole TOS family is infinitely proud of you. Keep building.
The workout of a champion. The welcome of a family. However you walk in, first-timer, boxer, or somewhere in between, you'll leave stronger than you came.
TOS does neither. Here, a Hall of Famer meets you exactly where you are, and a roomful of people make sure you keep coming back. The hard part isn't the work. It's walking through the door. Do that, and we've got the rest.
He's been where you are, and a lot further. DaVarryl came up from a hard start in Washington, D.C. and turned it into a right hand so feared that Ring Magazine called him the hardest puncher in the world. A former pro heavyweight, he fought for the IBF World Title and rose all the way to the Colorado Sports Hall of Fame, one of only three boxers ever inducted, alongside names like John Elway, Peyton Manning, and fellow boxing great Jack Dempsey. That last name carries weight in his family: Dempsey was his grandfather's favorite boxer, so his grandfather's two favorite boxers, Dempsey and DaVarryl himself, now share the same Hall of Fame. That's not lost on him.
But ask him, and the gym matters more than the trophies. It shows in the work: every year he sends boxers to the Colorado Golden Gloves, and every year some come home champions. Whatever you're chasing, he knows the way.
“Education gave me wisdom. Boxing gave me a platform. Together, they made me unstoppable.”– DaVarryl “Touch of Sleep” Williamson, MA HOF
An old-school boxing gym, run on sweat and reps, and open to everyone. First-timer or future pro, all fitness or all in, youth or competitor, there’s a lane here with your name on it. You get the same training the pros do either way; competing is always your choice, never a requirement.
The pro's workout: footwork, bag work, mitt rounds with the head coach, and conditioning, with zero pressure to ever spar or compete. Just skill, sweat, and results you can see.
Who trains here →Ready to test yourself in the ring? Join our USA Boxing amateur team for serious coaching, controlled sparring, championship-built mitt work, and full bout preparation.
Meet the team →Serious about going pro? DaVarryl has trained professional boxers and still does, by arrangement. Bring your goals to a former NABF champion and IBF World Title challenger and talk through your path.
Talk to DaVarryl →Younger and older, first day or bout-ready, every shape and every pace, women train hard here and are treated like boxers from the start. You'll build serious power and leave standing taller, with zero pressure to ever spar unless you choose to.




Plenty of our boxers started in their 40s, 50s, 60s, even into their 70s and 80s. Coaches Sweet Black and Sugar-B are both Masters champions. The Good Doctor and Mighty Mouse, our “Easy Like Sunday Morning” regulars, are both nearly 80 and still don’t miss a round. The same coaching that builds young champions meets you exactly where you are, at any age.
Start Your First SessionEvery option is one-on-one or small-group, never crowded, just technical coaching built around you. Drop in, commit to a pack and train at the insider rate, or join a program. New here? Call and we’ll walk you through it.
Small-group coaching, max of four. Bring a friend and split the focus.
30 minutes on the mitts and bags over your lunch break. Box lunch to go. Mon–Fri, 12:00 or 12:30.
Buy LunchGive the gift of training. Any amount from $50 up, perfect for any occasion.
Buy Gift CardBoxing games that build skills, discipline, and confidence in a fun, structured setting for youth.
Book a SessionCall to enrollTrain and compete with the TOS team. Come in and talk with Coach DaVarryl, the Commander, about monthly pricing.
Talk to Coach DaVarrylCall to enrollSessions run Monday through Friday. Semi-private sessions are small groups; private sessions are one-on-one with a coach. Weekend and midday sessions are available by arrangement, just give us a call.
Midday private sessions (12–3 PM) are available by arrangement. Just give us a call to set one up.


The man on the mitts is ‘The Hebrew Hammer.’ Over twenty years with DaVarryl.
One hour. One-on-one. DaVarryl’s eyes on every round.
No group. No assignment. No dilution.
Colorado Sports Hall of Fame. “Hardest Puncher in the World,” Ring Magazine. IBF World Title challenger. DaVarryl personally trains up to six private clients a week. When the roster’s full, it’s full.
$150per session
Your corner. With the man whose name is on the wall.
Hard rounds on the bags, technical coaching at your shoulder. Nobody gets left on the floor to figure it out alone.
“Champions aren’t made in gyms. Champions are made from something they have deep inside them.”– Muhammad Ali
Meet our champion team. Every TOS coach is USA Boxing certified, SafeSport-trained, and background-screened, so you and your kids are in expert, accountable hands.
Getting nicknamed by the champ is a rite of passage.
Put your name in a young person's corner.
Coaching here is one of the most direct ways to change a young person's life, and we'll help you get fully credentialed. Becoming a USA Boxing coach means registering as a non-athlete member, completing SafeSport safety training, passing a background screening, and finishing the Green-level coaching course. If you've got the heart for it, we'll help you with the rest.
Already talked with us? Continue to USA Boxing coach registration →
Choose “Non-Athlete · Coach” and select “TOS Boxing” during signup.
TOS Boxing isn’t just where you get in shape, it’s where competitors are made. These are the boxers carrying the TOS name into competition. The team trains Monday through Friday, 4 to 6 PM, and spars Saturday mornings leading up to tournaments and bouts. Semi-private and private sessions run every day the gym is open, including weekends.
Register with USA Boxing through our gym and step into the ring to compete, insured, registered, and ready to compete.
Becoming part of the TOS Boxing team makes it official. You'll be covered by accident insurance while you train, eligible to compete in USA Boxing sanctioned events from local shows to nationals, and part of the same pathway that leads to Team USA. Not ready to spar yet? A Fitness membership lets you train like a boxer and upgrade anytime.
Already talked with us? Continue to USA Boxing registration →
New members: choose “TOS Boxing” as your club during signup.
From early rounds to fight nights, these are the moments that built TOS.




































Fight results, upcoming events, and what's new on the floor.
From the ring to the stage, Alejandro just earned his high school diploma. The whole TOS family is infinitely proud of you. Keep building.
You’re InvitedSpend an afternoon with the young athletes your generosity puts in a coach’s corner. Slow-smoked barbecue from Smokin’ Outlaw Kitchen, the whole TYP family in one place, and the kids whose lives you’re changing, right in front of you.
Questions? Jennifer Williamson · 303-900-5246
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