John Baker ATC, Lead  Athletic Trainer – Grand Rapids, MI
John Baker is the President of Xtreme Performance since its inception in 2001. A graduate of Northern Illinois University with a bachelors of science in Corporate Fitness/Exercise Science and Athletic Training, he has dedicated his career to helping athletes achieve athletic success.
John began his career in the Chicago land area working with athletes of all levels. Many of his clients consisted of junior high, high school, and collegiate levels. Additionally, he has worked as an athletic trainer with athletes from the Chicago Blackhawks, Arena Football, and pro beach volleyball.
In 2001, John began Xtreme Performance with the focus of helping young athletes achieve higher levels of speed, agility, strength and power, while reducing their risk for injury. Hundreds of athletes have benefited from the athletic training in Grand Rapids, MI that John provides at Xtreme Performance.

John – Lead Athletic Trainer

Keith Spieker, Athletic/Fitness Training Specialist
Graduated from Grand Valley State University in April 2012 with a degree in exercise science. Sports background includes many years of club soccer experience, 4 years high school varsity soccer and track, and 4 years GVSU club soccer. He enjoys working with people and being a part of the positive changes in their life.

Keith – Athletic & Fitness Training Specialist