Medical Definition of Z LINE. : any of the dark bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres.Britannica.com: Encyclopedia article about Z line.efinition of Z LINE. : any of the dark thin bands across a striated muscle fiber that mark the junction of actin filaments in adjacent sarcomeres. ADVERTISEMENT.
The average fb speed in the MLB is 91-92ish. Catchers compete with this when trying to throw down a runner at 90ish. The average throw speed from third base is 80 MPH. As for the rest of the positions I am not sure of the exact average, but it is not as fast or faster than pitch speed.
Major League Baseball's Scout Rating System Here's one of the best explanations of the professional baseball's scout rating systems that I have found. Some organizations use the 20/80 scale others use 2. to 8.They are the same thing.he average major league fastball is 88-89 mph on a JUGS Speed Gun and 84-85 mph on the Ra-Gun. Scouts will rarely if ever sign a pitcher who does not throw at least 85 mph on the JUGS Speed Gun. CHECKLIST FOR GRADING PITCHERS Fastball-The first thing a scout looks for is a fastball with good velocity and movement.