travlerajm
Talk Tennis Guru
His separation comes from explosiveness, both in his elite agility / court coverage and in his explosive rotational swing paths to generate power.
Those things peak at age 21. It’s all downhill from there. The body tissues get stiffer, less durable, slower to recover.
His lightweight racquet setup necessitates his explosive cuts, further amplifying his injury risk by transferring dangerous levels of repetitive shock to his wrist, forearm, and elbow.
And then there’s that over reliance on the jump serve to deliver a downward angle into the service box. Height-based serves age better than explosive shoulder motions. Ask Roddick, Edberg, Rafter how things went when the shoulder reached the late 20s? — not as well as it did for post-30 peakers Isner and Karlovic and Kandy.
Other elite players who won with foot speed as their primary separator — Michael Chang and Lleyton Hewitt come to mind — peaked early when their strength-to-weight ratio was peaking. They faded off in injury frustration in their late 20s, unable to sustain a high level once their footspeed based games deserted them.
Those things peak at age 21. It’s all downhill from there. The body tissues get stiffer, less durable, slower to recover.
His lightweight racquet setup necessitates his explosive cuts, further amplifying his injury risk by transferring dangerous levels of repetitive shock to his wrist, forearm, and elbow.
And then there’s that over reliance on the jump serve to deliver a downward angle into the service box. Height-based serves age better than explosive shoulder motions. Ask Roddick, Edberg, Rafter how things went when the shoulder reached the late 20s? — not as well as it did for post-30 peakers Isner and Karlovic and Kandy.
Other elite players who won with foot speed as their primary separator — Michael Chang and Lleyton Hewitt come to mind — peaked early when their strength-to-weight ratio was peaking. They faded off in injury frustration in their late 20s, unable to sustain a high level once their footspeed based games deserted them.