Tennis: Forehand in Murray's Wheelhouse

Note initially the swing is from the shoulder ...the bicep does not engage until impact when it contracts and pulls string bed up and across the body imparting heavy topspin to ball

weight moves from back foot to the front thru impact ...weight moves forward and up

Arm lags due to shoulder girdle rotation. This imparts heavy topspin. Weight moves forward into shot ...do not fall back.

Adjust position with small shuffle steps. Do not stay stationary and adjust swing to ball height. Move forward and back to get the ideal ball height for a powerful shot "in your wheelhouse"

Key: the hips start rotating before the racket starts forward

...a secondary observation in Murray's swing is his forward movement to the ball ....excellent footwork to deftly move his body fwd and put oncoming ball into his wheelhouse ...if he stayed in place, he would be impacting ball at too low a point for an aggressive shot like the one he had here...

start swing 1' below ball. At impact, segway to level and pull across the body using rotating right shoulder and a contracting right bicep