Protecting athlete health requires more than treating injuries - it demands proactive systems that identify risks and prepare for emergencies. Corey Tremble, Director of Medical Operations for the Miami Marlins, has built his career around advancing athlete care across professional baseball. With more than two decades of experience, he now oversees medical operations for the entire Marlins organization, from the major league team to their academy in the Dominican Republic. Under his leadership, the Marlins have implemented a comprehensive cardiac health and emergency preparedness program designed to better protect players both on and off the field. By combining advanced screening, structured emergency planning, and modern life-saving technology, Tremble is helping reshape how organizations approach player health and safety.
“With Avive, we don’t have to go down that road of buying new batteries and pads. So it was great for a cost effective side, but also for portability and the ability to make sure that we have them in our go bags, they fit well and still create a really good setup for us.”
Corey Tremble, Director of Medical Operations for the Miami Marlins, has spent more than two decades working in professional baseball athletic training and medical operations. After 17 years with the Detroit Tigers and a stint with the Texas Rangers, he joined the Marlins to oversee medical operations across the entire organization - from the major league club to the Dominican Republic academy. In this role, Tremble has helped lead a new player-centered approach focused on long-term health, building systems that support athletes not only during their careers but well into the future.
A major initiative under Tremble’s leadership is a comprehensive cardiac health and risk-mitigation program. He started by reaching out to Sports Medicine Emergency Management, run by Ed Strapp and Daryl Conway, who are the lead authors on the position paper for emergency action planning for athletic trainers. Together, they created a comprehensive program that can be explained by the analogy of “building a house”. The “blueprint” represents strong emergency action planning and staff preparedness. The “electricity” refers to electrocardiograms (EKGs) conducted on all players to evaluate the heart’s electrical activity. The final layer, the “plumbing,” involves baseline echocardiograms that examine the heart’s structure. By pairing these screenings together, the Marlins can detect cardiac conditions that might not appear through EKG testing alone, giving players valuable information about their long-term health.
To strengthen emergency preparedness, the Marlins partnered with emergency action planning experts and conducted training simulations to identify gaps in their response systems. This process led to the introduction of standardized emergency “go bags” across facilities. Each bag contains critical equipment, including Avive Connect AEDs, allowing staff to respond quickly to a cardiac emergency wherever it occurs within the organization.
Tremble has found several advantages in integrating Avive Connect AED®s into the Marlins’ preparedness strategy. Weighing just 2.1 pounds, the devices fit easily into the team’s mobile go bags used for on-field response. The AED’s Spanish-language option is also valuable for the organization’s many Spanish-speaking players and staff. In addition, Tremble oversees Avive’s REALConnect™ platform, which allows him to monitor device locations, battery levels, and overall device health in real time - ensuring each AED is ready if it’s needed in an emergency.
Through this combination of cardiac screening, emergency planning, and accessible life-saving equipment, Tremble hopes the Marlins’ program will help raise the standard of care across professional baseball. His goal is to reduce risk while equipping athletes with knowledge about their health, demonstrating that comprehensive player care should extend far beyond the field.
“When we’re looking at our emergency preparedness, our emergency action planning and reaction to an emergency, our goal is to have an AED within 75 seconds of the site. If you can get things done within those early seconds from drop to shock, then you’re in a really good spot. Because of Avive’s size, because of its portability, we can have this in go bags and we can have these all around our academy... so that we’re always within 75 seconds of an AED.”
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