STACK Experts

Become a STACK Expert

The best sports performance experts in the country—trainers, nutritionists, sport psychologists and others—contribute STACK's Sports Performance content. These men and women work with top athletes and teams, at both the collegiate and professional level, to help them get better and make smart training, nutrition, skills and gear choices. They regularly offer the benefits of their experience to help STACK's readers and web visitors become better athletes. Read about their backgrounds and find their articles and posts—all designed to help young athletes safely and effectively boost their performance. Learn More.

Andrew Sacks
Andrew Sacks is the Owner and Head of Strength and Conditioning at Prime Sports Performance in Baltimore, Maryland. Andrew graduated from Frostburg State University in 2009 with a double major in Exercise Science and Psychology. Since becoming a certified trainer (NSCA) in 2009, Andrew has trained athletes of all ages and skill levels, ranging from 9-year-olds to elite Division 1 and professional athletes. Andrew specializes in designing individualized programs for each athlete based on the unique demands of their sport and position, and his training techniques have recently produced some of the best athletes in the Baltimore area, including 2 Baltimore Sun Players of the Year, the 2014 Gatorade Softball Player of the Year, the 2016 Varsity Sports Network Pitcher of the Year, and countless All-County, All-Metro, and All-State athletes.

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Andy Haley

Andy Haley is the Performance Director at STACK.

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Annie Koeblitz

Annie Koeblitz served as STACK's associate digital producer and graduated from Rollins College, where she played lacrosse and majored in Critical Media & Cultural Studies and Sociology.

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Anthony Drago

Anthony Drago is the founder and president of GPS Basketball Instruction. GPS stands for Go Prove Something. He is also the author of the book, "Go Prove Something! A Basketball Player's Guide to Legally Using PEDs."

Drago is a veteran of The United States Coast Guard, former certified personal trainer and 20-year advocate of the personal development industry. A basketball player for over 30 years, he is the former Assistant General Manager, Director of Player Development and Assistant Coach for the Staten Island Vipers ABA Professional Basketball Franchise. He was a guest on Sports Tuesday with Steve Manderson and is a USA Basketball certified coach.

Training players in all aspects of the game, Drago emphasizes speed, agility and quickness. In addition to physical training, he also guides basketball players' personal development. Learn more at www.gpsbasketballinstruction.com

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