Originally Posted by 10isfreak
Suresh and newpball, this is the article which convinced me:
The string bed is systematically closed beyond the vertical plane, mostly between 10 and 20 degrees, and the swing path prior contact is always pretty shallow -- in the example he gave, Federer and Nadal both swung at 18 degrees from the horizontal plane.
As for the angle of the racket face, it opens up (becomes less closed, actually) as you swing forward -- the best pros start with their racket face parallel to the ground.
That article gets a big *shrug*
. Thousands of words correlating
some lines on some graphics to the production of topspin. I know you took away a lot from that article, so this might seem flippant, but it truly is a lot about nothing.
Putting topspin on a tennis ball is super easy, and an even easier concept. Use the racquet to spin the ball about it's X axis. Simple as that. However you can, or want to produce that effect, is fine, as long as you're happy with the result.
He could have shrunk that article down to this and accomplished the same thing: practice tennis for 8 hours a day and you're on your way to hitting topspin like a pro!
Sounds flippant, again, but I'm serious. Even the most detailed understanding of rotational physics will increase your potential tennis skill by a mere fraction of what more practice would do.
I like to know technique as much as anyone here, don't get me wrong, but you're way over-thinking this one.