Watch out for the next threads in the series:
If Olivier Rochus were 187 cm tall, how high he could climb?
If Rafa wore size 11 shoes, how that would affect his game?
Gilles Simon's thin legs a real asset: Low mass facilitates running - or not?
Roger Federer, go home! The true ballet in tennis is Čilić's hand-wrist action while bouncing the ball
etc.