Isner has a great serve– he leans into his toss and then he springs up and out
when you add your knee bend on the serve your line of arc should be straight
front foot is up to pre load the weight transfer– back foot is set so the heal goes to the opposite net post to pre…
Dusty Baker tip– pull your hand in — not nuts about the head angle– but it beats getting hit
to be able to rotate you must get the front hip to open by having the front foot more toward the net–bonus– knee and racquet…
the two handed follow through we like the most is to rotate and get both elbows up
racquet head and back knee below flight path –Dennis then has one of the biggest unwinds and rotations in tennis
once you start using a knee bend on your serve, you want to try and spring up to the hit– Flex has a giant spring…
the key to getting any rotation on the stroke is to get the front hip to open slightly by getting the front foot pointing more…
if you can you want to attack the serve by getting inside the court– this takes time away from the server as he/she trys to…
as much as you can — keep your shoulders on a straight line and your shoulders over your hips– a tall back
jumping is used to get the ball in a more comfortable hit zone