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Group photo of youth basketball players training in Southeast Aurora, CO with Zero Doubt Basketball — proven skills training for ball handling, shooting, footwork, and confidence building. Trusted by 600+ families.

Is Your Athlete Struggling to Score and Play With Confidence?

At Zero Doubt Basketball, we help players ages 10+ develop the skills and mental toughness to stand out — so they score more, play more, and get noticed.

Group of basketball players in the gym near Parker, Colorado taking picture with their basketball trainer, Marko Zelic.

TRAINING THAT WORKS

With over 600 players trained, our basketball training helps athletes develop real, game-ready skills that shows up when it matters. We focus on all key areas of the offensive game—ball handling, footwork, finishing, and shooting—so your child becomes a more confident, impactful player. Every session is designed to build skilled athletes who contribute to their team and stand out on the court. 

SKILLS+MINDSET

Our training goes beyond just drills and skills. We help players grow their game and their mindset—teaching confidence, resilience, and focus in a way that supports their overall development. Whether your child is chasing big goals or simply learning to love the game more, we meet them where they are and help them move forward.

FAMILY

Yes, we’re here to build skills and confidence—but before anything else, we’re here to care. Our first job is to guide young athletes with integrity, lead by example, and be mentors they can trust. In a world that feels more chaotic every day, we’re grateful for the chance to be a steady, positive influence in their lives.

HEAR FROM PARENTS AND PLAYERS 

HERE IS WHY COLORADO PARENTS TRUST US 

OVER 60, FIVE ⭐ REVIEWS ON GOOGLE! 

Training

HERE IS WHAT YOU GET IN OUR CONFIDENT SCORER ACADEMY

- Elite Group Skill Sessions-
 
Our in-person skill sessions are designed to refine both fundamental and advanced basketball skills in a group setting. Each session focuses on ball handling, footwork, finishing and shooting helping to build more skilled, confident, and athletic basketball players.
-Personal Coaching
(Monday-Friday) 

 


Support doesn’t end when the session is over. Our online coaching provides weekday guidance, allowing players to ask questions, review drills, and receive feedback remotely, so they’re always on track toward improvement.
-Weekly Homework Assignments- 

 
Players receive homework drills each week, posted every Monday. Covering areas such as ball handling, shooting, finishing, or footwork, these assignments help players build consistency and reinforce their training.

-Mindset Lessons-​

Each week, players get mindset lesson on topics like confidence, focus, effort, and personal growth. We give them practical tools, exercises, and advice they can use right away in their game and daily life. It’s a simple but powerful way to help athletes play with more confidence — and grow as people, not just players.
-Improved IQ- 
Each week, players get an online film study lesson where Marko breaks down clips from college, pro, and high school games. Athletes learn to recognize reads, decisions, and details that impact outcomes, and are encouraged to study film on their own and share insights. It’s a powerful way to build basketball IQ and start thinking like advanced players.
-Player Of The Month Award-
 
Player of the Month Award celebrates athletes who go all-in — completing every assignment, staying focused in sessions, and giving their best effort. It’s more than recognition; it’s a chance to highlight hard work, inspire others, and create special moments with Marko as he spends time honoring the players who truly stand out.

+Exclusive Extras to Support Your Athlete's Growth


  • Personalized Game Breakdowns 
    Professional-level feedback on your athlete’s game film. They’ll know exactly what they did well and what to fix — something most kids never get access to.

  • 10% Off Extra Programs, Camps, and Clinics 
    Families save while giving their player more opportunities to sharpen skills and gain an edge.

  • Full Shooting Mechanics Analysis 
    A detailed breakdown of your child’s shot form so they can fix mistakes fast and score more points with confidence.

  • Free Camp Entry
    An entire camp included at no cost — extra hours of coaching, reps, and competition against top local players.

  • Free Private and Mindset Session
    One-on-one focused training designed around your athlete’s unique needs, accelerating their growth far beyond group sessions.

HOW TO GET STARTED WITH US

STEP 1 - TAKE THE QUIZ

Click the button below and fill out a short application.

STEP 2 - BOOK A CALL

If your athlete is a good fit, you'll get a private link to schedule a Zoom call with Coach Marko. 

STEP 3 - START TRAINING

You athlete finally gets the training he/she deserves!

Marko Zelic, owner of Zero Doubt Basketball.

OWNER AND HEAD TRAINER

MARKO ZELIC

About

Hey guys, it's me, Marko. Let me tell you a little bit about myself.

 

Originally from Serbia, I came to the U.S. to pursue my basketball dream—and lived it by playing four full years at the college level. During that time, I was blessed to learn under coaches and mentors who truly cared about me, both on and off the court.

After graduating in 2018, I discovered a new passion: helping young athletes unlock their full potential. In 2020, I took a trip to Michigan to train with Micah Lancaster—one of the world’s top basketball skills trainers—and learned what real player development looks like.

Since then, I’ve been combining advanced skill enhancement methods with high-IQ, physical, European-style training to help players get real results. Whether it’s sharper footwork, better decision-making, or more confident scoring, my goal is to build well-rounded, game-ready athletes who stand out on the court.

A few fun facts about me:

  • I was teammates with Nikola Jokic back in Serbia

  • I dunked at age 12

  • I started writing a book at age 11 (still unfinished!)

  • I used to rap and perform live from age 13 to 16

  • I still freestyle in the car on the way to training

  • I’m 6'8"—taller than 99% of the world

  • I love hiking and biking

  • My wife was a better player than me

  • And... I’m a proud dad to the cutest 1-year-old in the world

 

Want your athlete to level up? Join 400+ Colorado families receiving weekly tips, mindset lessons, and insider promotions straight from Coach Marko!

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