I forwarded the words attributed to John Huggan to a buddy of mine that played Division 1 tennis in college, and eventually became a professional instructor. Here is his reply (he's very opinionated, so I wanted to see how ruffled his feathers would become
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"This is what happens when experts go outside their area of expertise.
Tennis has long been the dumping ground for everyone in America from the "don't turn pro when you're ready and burn out like Capriati" (way overblown, forget about Evert, Borg, Agassi, Graf, Sampras, Becker and every other European mega-millionaire superstar) to the men's game has no appeal (thank Mac, among other idiots, for blasting the game for a decade as soon as he quit due to mental exhaustion. The guy was wacked when he played and still is today only now he rocks the mic).
I don't have specific stats, but I've been told the #1 sport in the world is ..... futbol (i.e. soccer) and #2 is tennis. American tennis appeal certainly has slumped, but it has nothing to do with big serves and equipment changes. In fact, they actually have a speed gun on the court to track how fast the serve, which is a huge fan favorite. Tech increases are very similar to golf in that they help good players and bad players. But bad players are still very bad (just like golf) and unlike golf, many pro's play rackets that are 5+ years old (few pro's use drivers 5 years old). The lighter rackets have assisted women to a much greater degree, since the men can only go so light (not much can be done with a badminton racket or ping pong paddle, you need mass). Sampras played the same racket (no updates) for 15+ years. Furthermore, unlike golf, distance is a non-issue. You still have to hit it in the court, if you miss a 'fairway' the point is over you lose. You can only hit the ball so hard and have enough control to get it in. Beyond that, you can only hit it so hard before you get injured as it's an unbelievable grind. Try bustin a ball as hard as you can every shot for 2-4 hours for two straight weeks. Your season will be done in a month.
Wimbledon has always been a speed/power game due to the grass surface - serving and volleying - and it is still that way today. Little known fact, MAC was a big server in his day and relied on it as he had virtually no ground strokes. Can't comment on Nastase, since I never saw him play, but his reputation was similar to that of Ballesteros - a simple jackace, just like Mac. Every other tournament except the 2 wimbledon warm-ups is power and finesse. Consider Agassi, Nadal, Coria, Hewitt, Ginepri, among other groundstrokers that come to the net 2x per match - coin toss and handshake, not to mention all-courters like Blake.
Sampras was the greatest ever and people marveled at his skill, but mac complained that he was boring. It would be nice to see Tiger conduct himself in a like professional manner. Now, barring injury, Federer will go down as the greatest of all time and he rarely serves it 130 mph. He simply owns, not has, but owns every shot - similar to TW 2000 - and you can bet he's not changing his strokes. The guy is a genius, he doesn't even have a coach!
If this writer doesn't think the game is entertaining today than he probably doesn't really understand the game and certainly didn't see this year's Open. I've been watching it for 2 decades and this was the best I've ever seen.
The game has dropped in america, but not due to technology. Consider current national past times, NASCAR, Bowling, Golf, Baseball/Softball, football, hockey, poker and the ever increasing obesity and drug addiction in America. All of these currently popular games/sports you can get loaded at while watching and some even while participating. Not the case in tennis, it's not a drinking 'sport', fat man 'sport', or a gambling 'sport'. It's true sport - physical and mental."