Who is Marko Zelic?
The Foundation of Zero Doubt:
Marko Zelic’s basketball journey began in Serbia, a country known for its deep love of the game and focus on fundamental skills.
Growing up in a highly competitive European system, he learned early on that success comes down to mastering the small details of the sport.
Through consistent hard work, Marko developed into one of his country’s top youth power forwards by the age of 15. This path allowed him to train and compete alongside one of the greatest players of all time, Nikola Jokic.
Spending those early years around players of that caliber gave Marko a firsthand look at what it takes to reach the highest levels of the game, inspiring him to bring those same developmental habits back to his own coaching style.
After graduating high school, Marko moved 6000 miles away from his family to pursue his dream of playing basketball in U.S. He was blessed to play full 4 years of college, being mentored by great coaches who played a big role in shaping who Marko is today.
Nikola and Marko prior to the Nuggets game.
Bringing Elite Training to Colorado:
After realizing his dream of earning a scholarship and playing college basketball in the United States, Marko transitioned his deep on-court experience into a passion for high-level mentorship.
In 2020, after directing regional youth basketball development in Centennial, he founded Zero Doubt Basketball to give local athletes a true development system that produces incredible results.
Over the last 6 years Marko and his hand-picked trainers have helped over 600 players across Parker, Centennial, and Southeast Aurora develop real skill, build their confidence, and increase their basketball IQ.
High Standards. High Energy.
At Zero Doubt, we believe premium training thrives on high engagement, replacing outdated, rigid drills with modern, high-intensity skill development.
Our training systems are designed to scale with an athlete's ambitions, with a proven track record of developing players from the youth level all the way up to collegiate and professional ranks.
We built a high-energy, positive environment where advanced concepts are made accessible. We meet driven athletes exactly where they are at, pushing them to their highest potential while ensuring they fall in love with the hard work it takes to get better.