top of page

Jake Sendler - 21 Year Old MMA Fighter In Australia Dies From Rare Condition Linked To Intense Gym Workouts

Writer: Austin JonesAustin Jones

Jake Sendler
Jake Sendler - MMA Fighter Dies at 21


Jake Sendler - 21 Year Old MMA Fighter In Australia Dies From Rare Condition Linked To Intense Gym Workouts

In a devastating incident that has rocked the MMA community, 21-year-old Jake Sendler, an amateur MMA fighter and personal trainer from Australia, tragically passed away after suffering from a rare and potentially deadly condition known as rhabdomyolysis. The condition, often linked to extreme physical exertion, occurs when muscle tissue breaks down and releases toxins into the bloodstream, which can lead to kidney failure, heart complications, and other severe health issues.


Sendler, who was also studying to become a PE teacher, collapsed during a fight in Melbourne earlier this month. Initially unaware of the severity of his condition, he continued to push through intense training and competition. As he prepared for his upcoming fight, Jake experienced muscle soreness and dark-colored urine but dismissed it as dehydration, increasing his fluid intake. Tragically, by the time his symptoms worsened, it was already too late, and he was rushed to the hospital.


Doctors described his case as the most severe they had ever encountered. Despite undergoing multiple surgeries and being placed in an induced coma, Jake’s condition deteriorated rapidly. His family shared the heartbreaking moment when doctors informed them that there was no more they could do. Jake's mother, Sharone Sendler, recounted the final moments with her son, saying, "When we got into the ICU, the doctor said when they opened him up again there was just too much tissue that had died, and there was so much damage, there was nothing more they could do."


Jake passed away on March 13, after fighting valiantly for his life. He was remembered as not only a dedicated athlete but also as a compassionate coach, son, brother, and friend who touched the lives of everyone around him. His family is now determined to raise awareness about rhabdomyolysis, hoping to prevent other families from enduring the same heartbreaking loss.


At FIGHT.TV, we extend our deepest condolences to Jake’s friends, family, and the entire MMA community. His passing serves as a poignant reminder of the extreme physical demands that fighters place on their bodies in the pursuit of greatness. As athletes, we are often taught to push through pain and fatigue, but Jake's tragic death highlights the importance of listening to our bodies and prioritizing recovery just as much as we focus on building endurance.


Rhabdomyolysis is a silent killer that can be triggered by overexertion during high-intensity workouts or sports. The symptoms, including muscle pain, extreme exhaustion, and dark urine, should never be ignored. Jake’s story should serve as a wake-up call for fighters and athletes alike to pay attention to the signs their bodies are giving them. While pushing yourself in training is an essential part of growth, ensuring proper recovery and recognizing the need for rest is equally critical to maintaining long-term health and safety.


We urge the combat sports community to unite in raising awareness about this condition to prevent further tragedies. Let’s honor Jake’s memory by educating ourselves and each other about the importance of recovery, self-care, and listening to our bodies. Rest in peace, Jake Sendler. You will not be forgotten.


For more information on rhabdomyolysis and to learn how to protect yourself during intense training, please consult with medical professionals and stay informed on the condition’s risks.

bottom of page