The other day I was thinking and talking about how the Tommy John Twist (TJ-Twist) sometimes leads to worse problems, one of those worse problems being Thoracic Outlet Syndrome (TOS).

Mike Foltynewicz

It's still early in the process, but I'm starting to wonder if the movement I call the TJ-Twist should just as appropriately be known as the Thoracic Outlet Syndrome Twist (TOS-Twist).

Matt Harvey

I say that given the incidence of Thoracic Outlet Syndrome (TOS) in a number of pitchers who employ the TJ-Twist.

  • Mike Foltynewicz
  • Matt Harvey
  • Vince Velasquez

Vince Velasquez