At the moment, the racket's technology can identify the type of shot a player hits (forehand, backhand, serve), the kind of spin a player imparts on the ball and the power of a swing.
Andy will be down at Wimbledon in the week beforehand working tirelessly to get that backhand and first serve firing consistently, but it's about taking your game from the practice court to the match court.
Nadal looks slimmer than before, and his powerful forehand appeared to be recovering faster than his serve and backhand.
And at 3-2 down in the second set, the Spaniard found himself 0-40 on serve and a wide backhand handed the break to his opponent.
That one point never arrived as Nadal played his most brilliant tennis of the evening: forehand winner, service winner, backhand winner, ace and a strong serve to finish off the game.
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"The key to winning the match was my better serve and playing high on his backhand, " said Nalbandian.
He generally prefers to hit his first serve to his opponent's backhand, but against Djokovic he is serving the majority to the forehand.
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Another missed first serve, and Fed is on his backhand, a tiny gap down the line... he's made it!
In the decider, Henman moved 5-3 ahead when Agassi thrashed a backhand wide, but the American held to force Henman to serve for the match.
Federer's next return looks long - he'll challenge, but it's so long - second match point, serve in, weak return, gap on the Fed backhand, big gap on the Fed backhand... it's there!
Djokovic was starting to dictate with his forehand as he had against Federer and he consolidated the break to move 4-1 clear, only to miss a game point on his next serve and allow Nadal back into it with a heavy backhand on his third break point.
Murray took advantage of the lifeline with a Verdasco double-fault giving the Scot the chance to serve for the match, which he did thanks to another backhand error from the Spaniard.
Coria, who lost only one set in the whole tournament, broke serve for a 5-4 lead in the second and Calleri sent a backhand wide to drop the second set.
The first set went with serve until the eighth game when Ferreira broke Hewitt's delivery with a spectacular backhand winner.
The match was then interrupted by rain but any hopes the stoppage might allow Djokovic to rethink his strategy as to halting Nadal's charge were quickly quashed as a trademark backhand from the "King of Clay" wrapped up the second set on Djokovic's serve.
The world number one set up match point with a serve-and-volley winner and then earned the victory when Lee hit a powerful backhand long.
The roof now closed because of rain, Djokovic, by now taking an age to deliver each serve, dug deep to hold his next service game, but Berdych's double-fisted backhand was beginning to yield results.
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