http://nypost.com/2017/06/19/the-epidemic-thats-ruining-youth-sports/
"A 2015 survey in the American Journal of Sports Medicine found that 60 percent of all Tommy John surgeries in the US are for patients ages 15 to 19 — startling considering that professional baseball player Tommy John himself was 31 when the surgical-graft procedure was invented to repair his damaged elbow ligament in 1974,"
"A 2015 survey in the American Journal of Sports Medicine found that 60 percent of all Tommy John surgeries in the US are for patients ages 15 to 19 — startling considering that professional baseball player Tommy John himself was 31 when the surgical-graft procedure was invented to repair his damaged elbow ligament in 1974,"