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.
New York Yankees news, scores, stats, highlights and more. Alex Rodriguez shocked the baseball world with his remarkable 2015 season, belting 33 home runs in the heart of the Yankees order.New York will pencil A-Rod in as the everyday DH to start next season.lex Rodriguez shocked the baseball world with his remarkable 2015 season, belting 33 home runs in the heart of the Yankees order. New York will pencil A-Rod in as the everyday DH to start next season.