i think andy murray mixes up his shots and in doing so he hits some of the slowest groundstrokes during matchplay
Slow groundstrokes I think are key to a good baseline game. You can use it as a measure of how good a player is. Lendl used to hit harder than anyone on tour. But he choose not to all the time. Guys that hit the ball hard all the times like Courier are like guys that telegrapgh serves with their toss. Top pros figure them out pretty easily.
Young guys feel that they have to hit the ball hard with lots of spin to prove they can hold their on.
Only the truly relaxed and good players can hit the ball soft 9Federer, Lendl, Connors, Mac, Wilander, Edberg).
Next time you watch Federer watch how weak his backhand slice is. He hits it soft, because he's not afraid to hit it soft.
Remember if the guy hits constanly at 70 miles an hour, recieving his 80 miles an hour approach shot is no sweat.
But if the guy goes from 50 to 80, the reciever is more apt to miss and make a mistake.
Watch Mac. He slices his backhand in rallies but usally comes over the top with more pace on his approaches. This shocks the reciever and sets up Mac for a relatively easy volley. Its exactly opposite of what most other players do.
If he hits hard all the time, which is the trend these days, they give up this opportunity to control your oppoenet.
Hitting hard also wears you out.
Its all about slowing the ball down.