[chuck]

This answer is plausible but incomplete. It would probably not have been incomplete in 1980. In 2006, though, it’s fair to ask why this kind of talent still matters so much. Recall what is true about dogma and Wimbledon’s sign. Kinesthetic virtuoso or no, Roger Federer is now dominating the largest, strongest, fittest, best-trained and -coached field of male pros who’ve ever existed, with everyone using a kind of nuclear racket that’s said to have made the finer calibrations of kinesthetic sense irrelevant, like trying to whistle Mozart during a Metallica concert.

According to reliable sources, honorary coin-tosser William Caines’s backstory is that one day, when he was 2½, his mother found a lump in his tummy, and took him to the doctor, and the lump was diagnosed as a malignant liver tumor. At which point one cannot, of course, imagine...a tiny child undergoing chemo, serious chemo, his mother having to watch, carry him home, nurse him, then bring him back to that place for more chemo. How did she answer her child’s question — the big one, the obvious one? And who could answer hers? What could any priest or pastor say that wouldn’t be grotesque?

It’s 2-1 Nadal in the final’s second set, and he’s serving. Federer won the first set at love but then flagged a bit, as he sometimes does, and is quickly down a break. Now, on Nadal’s ad, there’s a 16-stroke point. Nadal is serving a lot faster than he did in Paris, and this one’s down the center. Federer floats a soft forehand high over the net, which he can get away with because Nadal never comes in behind his serve. The Spaniard now hits a characteristically heavy topspin forehand deep to Federer’s backhand; Federer comes back with an even heavier topspin backhand, almost a clay-court shot. It’s unexpected and backs Nadal up, slightly, and his response is a low hard short ball that lands just past the service line’s T on Federer’s forehand side. Against most other opponents, Federer could simply end the point on a ball like this, but one reason Nadal gives him trouble is that he’s faster than the others, can get to stuff they can’t; and so Federer here just hits a flat, medium-hard cross-court forehand, going not for a winner but for a low, shallowly angled ball that forces Nadal up and out to the deuce side, his backhand. Nadal, on the run, backhands it hard down the line to Federer’s backhand; Federer slices it right back down the same line, slow and floaty with backspin, making Nadal come back to the same spot. Nadal slices the ball right back — three shots now all down the same line — and Federer slices the ball back to the same spot yet again, this one even slower and floatier, and Nadal gets planted and hits a big two-hander back down the same line — it’s like Nadal’s camped out now on his deuce side; he’s no longer moving all the way back to the baseline’s center between shots; Federer’s hypnotized him a little. Federer now hits a very hard, deep topspin backhand, the kind that hisses, to a point just slightly on the ad side of Nadal’s baseline, which Nadal gets to and forehands cross-court; and Federer responds with an even harder, heavier cross-court backhand, baseline-deep and moving so fast that Nadal has to hit the forehand off his back foot and then scramble to get back to center as the shot lands maybe two feet short on Federer’s backhand side again. Federer steps to this ball and now hits a totally different cross-court backhand, this one much shorter and sharper-angled, an angle no one would anticipate, and so heavy and blurred with topspin that it lands shallow and just inside the sideline and takes off hard after the bounce, and Nadal can’t move in to cut it off and can’t get to it laterally along the baseline, because of all the angle and topspin — end of point. It’s a spectacular winner, a Federer Moment; but watching it live, you can see that it’s also a winner that Federer started setting up four or even five shots earlier. Everything after that first down-the-line slice was designed by the Swiss to maneuver Nadal and lull him and then disrupt his rhythm and balance and open up that last, unimaginable angle — an angle that would have been impossible without extreme topspin.

Extreme topspin is the hallmark of today’s power-baseline game. This is something that Wimbledon’s sign gets right.(12) Why topspin is so key, though, is not commonly understood. What’s commonly understood is that high-tech composite rackets impart much more pace to the ball, rather like aluminum baseball bats as opposed to good old lumber. But that dogma is false. The truth is that, at the same tensile strength, carbon-based composites are lighter than wood, and this allows modern rackets to be a couple ounces lighter and at least an inch wider across the face than the vintage Kramer and Maxply. It’s the width of the face that’s vital. A wider face means there’s more total string area, which means the sweet spot’s bigger. With a composite racket, you don’t have to meet the ball in the precise geometric center of the strings in order to generate good pace. Nor must you be spot-on to generate topspin, a spin that (recall) requires a tilted face and upwardly curved stroke, brushing over the ball rather than hitting flat through it — this was quite hard to do with wood rackets, because of their smaller face and niggardly sweet spot. Composites’ lighter, wider heads and more generous centers let players swing faster and put way more topspin on the ball...and, in turn, the more topspin you put on the ball, the harder you can hit it, because there’s more margin for error. Topspin causes the ball to pass high over the net, describe a sharp arc, and come down fast into the opponent’s court (instead of maybe soaring out).

So the basic formula here is that composite rackets enable topspin, which in turn enables groundstrokes vastly faster and harder than 20 years ago — it’s common now to see male pros pulled up off the ground and halfway around in the air by the force of their strokes, which in the old days was something one saw only in Jimmy Connors.