Ultimate Analytic Tool

[paulcohen]

John;

Thanks so much for including my article.

You have come into the history of our sport of tennis and have created the ultimate learning and analytical tool. It is quite extraordinary. The tennis channel's instruction people do not come close to what you have done. You are truly revolutionizing the visual and historical sport of tennis.

To think that one person alone could do what you have done is remarkable.

Paul Cohen

[GeoffWilliams]

A locked elbow, what I call the arm bar (straight arm shot, no bend) is hit by many top pros: Fed, Nadal, etc. When the arm is straight, more to the point, when the wrist cannot "fluff" backwards during/after impact with the ball, more force can be applied to the shot, hence, the superior 1hbh players all use the arm bar back handed top spin or attacking flat shot (not a slice or a volley) shot at contact. Not one uses the double bend bh at impact. You have to be a superior athlete to succeed with a 1hbh today, as the odds are not with you even as it is. Does anyone remember Henin? About 135lbs, and could hit 90mph 1hbh shots? Not possible with a double bend bh, as too much force is lost, and contact is too far back, not forward enough in front of the hitting foot. Almagro, Guga, Henin, GAudio, Puerta, Gasquet, etc., all use the arm bar. When you double bend, you hit further back, and lose all that kinetic potential for further pressure, due to the shorter shot coil/span/attack into the ball is not as big a swing as the arm bar, on the bh or the fh, (bend makes it further back), and it throws away a lot of kinetic voltage. Same thing happens when the wrist is not locked back at contact, when it comes forward too soon at impact, and is not locked back. The wind shield wiper fh of today, still maintain the locked wrist long after the ball is gone, even to the end of the shot, their wrists are sill locked, for a firmer transfer of force. Force=Mass x Acceleration. A lighter frame, with lower swing speed, will not achieve much velocity or force vector, as some of us do this on purpose, as a main tactic, the rest of us call them: "Pushers."

A longer lever makes it possible to apply more force, more spin, more everything to the impact point.. Do any of you see a top server hitting a serve without full extension? Any of you see hackers use a double bend serve? The ball cannot go past 80mph with a double bend shot/serve. The fh is a diff. matter. Now you see all the women avoid overheads at all cost, so they can hit swinging fh volleys.. That's just sickening to me, to see the vanishing of a whole shot. It's like passing up a slam dunk, so you can shoot a free throw.

Talk to Delpo about the double bend fh. Talk to Gasquet about the double bend bh. They will snort, and sneer at you, as if you know nothing about mass x acc.=forced velocity/spin vectors.

The same thing is taught to volleyers. No swing, use the double bend, and hit late, not in front, not with a full slap. How many times have you seen the Bryans poach and slap a volley, all the way out in front of them, with a full stroke? Even on a blazing return, they can swing at a volley and hit it with an arm barred shot in front.

The truth is, to play a fully realized game, you must use all the coil a human body can muster. Taller players have more to use with longer lever arms/legs/arms for faster serving. That doesn't mean Olivier Rochus at 5'4" can't hit a serve at 110mph. Or a fh at 90mph. Could you do that when you were 5'4"? Full velocity/force requires full coil/kinetic voltage, and the double bend anything cannot supply it. Rochus uses a 1hbh, arm barred. And he has beaten Karlovic and Isner.

[westcoast777]

?

A locked elbow, what I call the arm bar (straight arm shot, no bend) is hit by many top pros: Fed, Nadal, etc. When the arm is straight, more to the point, when the wrist cannot "fluff" backwards during/after impact with the ball, more force can be applied to the shot, hence, the superior 1hbh players all use the arm bar back handed top spin or attacking flat shot (not a slice or a volley) shot at contact. Not one uses the double bend bh at impact. You have to be a superior athlete to succeed with a 1hbh today, as the odds are not with you even as it is. Does anyone remember Henin? About 135lbs, and could hit 90mph 1hbh shots? Not possible with a double bend bh, as too much force is lost, and contact is too far back, not forward enough in front of the hitting foot. Almagro, Guga, Henin, GAudio, Puerta, Gasquet, etc., all use the arm bar. When you double bend, you hit further back, and lose all that kinetic potential for further pressure, due to the shorter shot coil/span/attack into the ball is not as big a swing as the arm bar, on the bh or the fh, (bend makes it further back), and it throws away a lot of kinetic voltage. Same thing happens when the wrist is not locked back at contact, when it comes forward too soon at impact, and is not locked back. The wind shield wiper fh of today, still maintain the locked wrist long after the ball is gone, even to the end of the shot, their wrists are sill locked, for a firmer transfer of force. Force=Mass x Acceleration. A lighter frame, with lower swing speed, will not achieve much velocity or force vector, as some of us do this on purpose, as a main tactic, the rest of us call them: "Pushers."

A longer lever makes it possible to apply more force, more spin, more everything to the impact point.. Do any of you see a top server hitting a serve without full extension? Any of you see hackers use a double bend serve? The ball cannot go past 80mph with a double bend shot/serve. The fh is a diff. matter. Now you see all the women avoid overheads at all cost, so they can hit swinging fh volleys.. That's just sickening to me, to see the vanishing of a whole shot. It's like passing up a slam dunk, so you can shoot a free throw.

Talk to Delpo about the double bend fh. Talk to Gasquet about the double bend bh. They will snort, and sneer at you, as if you know nothing about mass x acc.=forced velocity/spin vectors.

The same thing is taught to volleyers. No swing, use the double bend, and hit late, not in front, not with a full slap. How many times have you seen the Bryans poach and slap a volley, all the way out in front of them, with a full stroke? Even on a blazing return, they can swing at a volley and hit it with an arm barred shot in front.

The truth is, to play a fully realized game, you must use all the coil a human body can muster. Taller players have more to use with longer lever arms/legs/arms for faster serving. That doesn't mean Olivier Rochus at 5'4" can't hit a serve at 110mph. Or a fh at 90mph. Could you do that when you were 5'4"? Full velocity/force requires full coil/kinetic voltage, and the double bend anything cannot supply it. Rochus uses a 1hbh, arm barred. And he has beaten Karlovic and Isner.

Not sure the argument made for the straight-arm forehand by way of the straight-arm 1hbh is entirely relevant for two reasons that come to mind. For one, the one-handed backhand involves significantly less torso rotation - the power for the shot comes from independent movement of the arm. In the forehand the distance of the elbow from the torso remains nearly fixed from the beginning of the forward swing up until contact. A second point, I haven't seen a pro hit a double-bend 1hbh whereas the majority of pro players hit with a double-bend structure for the forehand. To me, this suggests that a group of some of the best athletes in the world have independently arrived at the double-bent as a reliable, powerful way to strike the forehand.

Both the double-bend and straight-arm forehand rely on rotation to supply power. The shorter lever of the double-bend allows for faster rotation creating power that may equal the longer, but slower rotating, straight-arm forehand.