He also secured a 4-1 amateur boxing record, including two knockouts. Miocic then captured the NAAFS Heavyweight Championship, a pivotal achievement that paved his way to the Ultimate Fighting Championship. He signed a multi-fight deal with the UFC on June 14, 2011, making his professional debut on October 8, 2011, at UFC 136, where he defeated Joey Beltran via unanimous decision. Throughout his burgeoning athletic career and beyond, Miocic impressively maintained a parallel vocation as a firefighter and paramedic.
Miocic quickly rose through the UFC heavyweight ranks, earning significant recognition for his knockout power and grappling prowess. In 2012, he won a ‘Knockout of the Night’ award against Philip De Fries, followed by a ‘Performance of the Night’ award against Fábio Maldonado in 2014. His dominant performances culminated in him winning the UFC Heavyweight Championship on May 14, 2016, by defeating Fabricio Werdum. He successfully defended his title against Alistair Overeem in September 2016, and again against Junior dos Santos in May 2017.
His remarkable career is defined by a consistent track record of measurable success, record-breaking achievements, and significant victories against top-tier competition, making him a compelling and marketable figure beyond the octagon.