See Sampras slice serve http://www.youtube.com/watch?v=VejiFJQinJM.
Sorry, but my copy shows www.TheInnerSystem.com. Is this your website? The link doesn’t work.Toly I thought you were a decent guy. Why did you copy my youtube video (http://www.youtube.com/watch?v=w6cqVAKpOx0) and put it there under your own name? Please remove it?
Btw, if you post the video as public then everybody can do with it whatever they want.
I created my own YouTube library (http://www.youtube.com/channel/UCVtnV90bBCB50nkd8EQDFOQ?) by copying any interesting public video from internet.
Anyway, I apologize for any inconvenience.
I removed it!!!Some big artists put contents on youtube. Some people make money to create special video for youtube. You can't do with it whatever you want!
I don't care about your library. You just copied it 1:1. In the civilised world that is called stealing. Now you can remove it yourself or I can youtube take care of it.
Some big artists put contents on youtube. Some people make money to create special video for youtube. You can't do with it whatever you want!
I don't care about your library. You just copied it 1:1. In the civilised world that is called stealing. Now you can remove it yourself or I can youtube take care of it.
I voted Pronate. I come up to contact a bit on edge and it is impossible to hit the ball if the forearm does not pronate to some degree. But, I don't consciously think pronate but rather think hit across ball at desired angle - shallow 9to3 for slice and steeper 7to1 for kick.
I think you must pronate the forearm to some degree if you come up on edge otherwise you'll hit the ball with the leading edge of the racket head.
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Here are FYB Frank Salazar different serves. There is big difference between Salazar and Serena slice serve. Which one is better?
This is composite picture of Florent Serra’s kick serve.
Due to it is spin serve, we can see a lot of wrist ulnar deviation activity. That’s why the tip of the racquet draws cone spiral with some distortion because of arm rotation (not ISR), body motions and some modest wrist flexion.
All my posts with pictures and videos are public and not commercial, so you can do with them whatever you want.
Here's from practice today.
http://www.youtube.com/watch?v=gISxIU2Y-xM
I don't think I pronate, but not sure, so haven't voted yet.
I described standard pros technique who can hit 130mph and faster serves. I think you don’t want it because it is not friendly on body. I’m old man and I’m going to learn your serve method, pros technique is not working for me anymore.Thank you toly. This gives me some specific things to work on should I need to try to significantly improve my serves. I shadow served a bit, using a continental grip and following your suggestions, after reading your post. I didn't feel any bad or unusual stresses. So, I suppose I could learn to alter my serve per your suggestions.
I think it would take a lot of practice to get it to the consistency that I'm hitting my serve at now, albeit with a much better potential for spin and speed. But I hesitate to undertake that just yet, as my level of competition doesn't demand anything better than the way I serve now. Also, my current method of serving must be super easy on everything because I've never had any problems with stresses or strains either in the arm or shoulder from serving.
I wonder how much my more or less eastern grip (as opposed to continental) is contributing to my current less than optimal serving mechanics?
Also, to keep this as on topic as possible, I would say that I don't currently pronate on my slice serve. Correct?
Ok. Welcome to the club. So, from what you say, I might as well just continue with what I'm doing, as I'm 65 years old? That's good to know. I can get about 90-95 mph serving this way, but usually can get away with serving even slower at my level (and also against higher rated players, but need to serve better against higher rated to win service games regularly).I described standard pros technique who can hit 130mph and faster serves. I think you don’t want it because it is not friendly on body. I’m old man and I’m going to learn your serve method, pros technique is not working for me anymore.
This would explain why the only side effect I've ever felt from serving is a little bit of soreness in the wrist. But not very bad. I mean, I have recently played a match per day for several days in a row with no ill effects.You create ball’s speed mostly by using the wrist flexion, see picture 1. The wrist flexion rotates the racquet around 60° and this maybe too much.
I'm experimenting sometimes with a more continental grip.The internal shoulder rotation (pronation) rotates “not enough”, around 30°. If you change the grip to more continental, you would be forced to use less wrist flexion and more ISR (pronation). It is up to you.
Have been working on some slice serves, especially to deuce court, with good results (for my level).You also apply the wrist ulnar deviation (picture 2) around 45° and elbow flexion very efficiently and create devastating side spin. :shock:
I don't know what this means.Warning – slow down the elbow flexion. There must be no elbow brake. :twisted:
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This would explain why the only side effect I've ever felt from serving is a little bit of soreness in the wrist. But not very bad. I mean, I have recently played a match per day for several days in a row with no ill effects.
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MYTH: Practice, practice your serve to get a strong serve.
REALITY: If your technique is not effective for a strong serve you will be learning the wrong muscle memory and technique. However, you will probably hit the ball more reproducibly and that may allow you to improve your serve's reliability and pace up to a point. First, learn an effective technique without any biomechanical flaws that would prevent an effective serve. Or hire a well-qualified instructor that can train the proper techniques.
This is one reason that I hate to practice and avoid it. Maybe an effective practice method using high speed video would be to video just 1 - 3 strokes and immediately look at the videos and analyze them. Find flaws, they are very easy to spot. Make corrections. Repeat. Looking at videos of every 2 or 3 strokes is very, very cumbersome. Is it better to practice for an hour and then to go home and view the videos only to find that you never use leg thrust, or that your wrist has a bend in it that might cause injury.
For example, I think that this wrist angle at impact is wrong and stressful. This technique might have contributed to the slight wrist pain that I was experiencing at the time that the video was taken. Compare to pro servers wrist angles viewed from behind on other videos.
http://vimeo.com/21512296
Pro server.
https://vimeo.com/27528701
Your slice serve video doesn’t show contact, so, it impossible to analyze. I found your 1st video in your thread.
There are some comparisons of your actions with standard pros serves.
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Sorry, I meant elbow extension. Never straighten your arm completely, otherwise you can get tennis elbow.TomT: I don't know what this means.
There are a lot of pros serving with bent elbow, see for example David Ferrer http://www.youtube.com/watch?v=Dh54JevAw78. In his case beta angle is not so important.The pro has a straight arm at impact ... All serve videos from behind show straight arms and wrist angles at impact that look similar. All the video thumbnails of serves from behind show impact, look at the wrist angles on the thumbnails. https://vimeo.com/user6237669/videos
First, thanks for the reply. I'm always interested to hear what people like you and toly have to say about anything. Very helpful.Regarding your wrist pain. I had some wrist pain and noticed a difference between my technique and that of the pro servers at the wrist.
Enjoyed watching your vids. I downloaded Kinovea and am looking forward to playing with it.In frames 4 & 5, you can see that you have a similar angle (ulnar deviation) in your wrist to mine. Your video is not high speed so I can't exactly see the impact to compare to the pro. The pro has a straight arm at impact and his wrist is straighter and does not look stressed. All serve videos from behind show straight arms and wrist angles at impact that look similar. All the video thumbnails of serves from behind show impact, look at the wrist angles on the thumbnails. https://vimeo.com/user6237669/videos
Yes, as per above, let me know if you think changing to a continental grip is advisable, and what else that might entail. Thanks, and if you're ever in Fort Lauderdale please contact me for a hitting session or even some match play.Your technique differs from what the pros are doing as shown. You are in unknown territory with your own technique. It could be very risky to find any new isolated fix for your serve and try to change it, especially mixing your technique with the current serving technique. Still, just as I'm also doing now, I would give some attention to your wrist, especially if there is any pain.
Ok. Thanks. I guess I've been lucky so far to have happened on a way of serving that's pretty much stress free for me. Except for the base of the thumb which can get a bit sore when I'm serving a lot of hard slices. I mention this in my reply to Chas. What do you think about changing to continental grip for slice serves?Sorry, I meant elbow extension. Never straighten your arm completely, otherwise you can get tennis elbow.
Ok. Thanks. I guess I've been lucky so far to have happened on a way of serving that's pretty much stress free for me. Except for the base of the thumb which can get a bit sore when I'm serving a lot of hard slices. I mention this in my reply to Chas. What do you think about changing to continental grip for slice serves?
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There would seem to be an easy fix for this. Just move the grip a little to the left (ie. continental) for slice serves, so that the palm of my hand, rather than the base of my thumb, is absorbing the bulk of any vibration transferred to the racquet handle. What do you (and toly) think? Should that do it, or will the change in grip also require some sort of change in the mechanics.
Currently, I don't pronate. That's become clear to me. But I also don't like the occasional slight but noticable pain I get. So, will I need to pronate along with adopting a continental grip?
Here's a couple more short vids of some serves:
Serves Deuce Court
http://www.youtube.com/watch?v=1UAw1-8p02A
Serves Ad Court
http://www.youtube.com/watch?v=wGE7qe_dfMo
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Yes, as per above, let me know if you think changing to a continental grip is advisable, and what else that might entail. Thanks, and if you're ever in Fort Lauderdale please contact me for a hitting session or even some match play.
So instead of this exaggerated slice, the pros use more subtle slices, tossing the ball where they would normally toss it for a flat serve but make a slight adjustment in their racket path and timing of pronation. They'll end up with a bit of side spin but still good power.
Not sure. But I think it's closer to 2 than to 1 on the serve. I definitely use a pistol grip on everything from the forehand side (including serve). Only use hammer grip on backhand side.I don’t accept typical tennis terminology about grips. There are 10 different and very confusing definitions of grips: – Pistol Continental, Pistol Semiwestern, , , Hammer Continental, , , Hammer Hawaii.
I prefer my own:
1. Continental grip – the wrist radius and ulnar deviations move the racquet in racquet string bed plane.
2. Semiwestern grip - the wrist radius and ulnar deviations move the racquet in direction perpendicular to racquet string bed plane.
According to my definition what grip are you talking about?
Understood.Also, I’m not Medical Doctor and afraid to talk about medical problem.
Very helpful. Thanks.Tom, Pat Dougherty has a video discussing eastern forehand serving and either keeping it or going to continental. He seems very familiar with the problem. When he first works at the fence he is demonstrating the eastern forehand grip - I had watched the video before and did not realize this. He is located in Bradenton, FL, maybe he has classes?
http://www.youtube.com/watch?v=xjXJGsRtm08&list=TL_3vIZICZSpY
Thanks. I'll do some searching for relevant vids on this.I looked for information (Youtube or other) that I had once seen that discusses the reason to use the Continental grip. I believe, but don't know, that it mentioned interference that the eastern forehand grip can cause, including in the hand. Maybe it was the problem that is now causing your pain. The information was probably in some serving video and I probably won't be able to locate it.
I put a Gamma grip on it that has foam ridges built into it. They stick out about 1/16 in. or so and probably lessen the vibration going to my hand.As a stop-gap fix, can you soften that part of the racket handle by taping a little of that dense foam white packing material where it bothers your hand?
I'm experimenting with moving my hand farther down the grip, basically holding with 3 fingers at the buttcap. Not just for the serve, but for other strokes as well. It seems to increase whippy action. Probably is lessening vibration to base of thumb also, as this part of my hand is almost totally off the grip. However, for stability and consistency I need to have my hand a bit higher on the racquet.Also, holding the racket at the end of the grip might help.
http://www.youtube.com/watch?v=EmkW_kQYww8
No.Does your video camera have a high speed video mode?
Interesting. Thanks.I take the approach of trying to understand - in adequate detail - what is going on with the current high level serve. The important biomechanical research for the tennis serve was published about 18 years ago by Elliott and others.
The recommended grip is a continental or, for more spin, an eastern backhand, or between the two. I have seen a nice description of the reason but could not locate it. It may have mentioned the interference you are experiencing. ? I believe it allows the arm to proceed and rotate freely with less stress when using the effective motions of the serve. Internal shoulder rotation (misnamed pronation) is the largest contributor to final racket head speed.
Ok. I understand that it might be a bit more complicated than just changing to a continental grip, and maybe in my case not even advisable.I looked at your last video and you have a strong and fast shoulder action that is getting you a very good serve. I can see that it is an effective serve.
You are grooved with a lot of muscle memory for several motions that are not included in the current service motion: grip, minimal leg thrust, shoulder not so one-high one-low as discussed in the Ellenbecker video, an angle in your elbow at impact, etc. I think these things are very hard to change and that any incorrect part could be an injury risk. You also may have incorporated motions to accommodate stiff or injured joints, for example, not bending the trunk as much as the pros do to get that shoulder so high. The pros really get some contortions! However, your upper arm bone stays in line with the line between the shoulders even if the hitting shoulder is not as high as for the pros - see the Ellenbecker video.
The edge-on rotation to facing-the-ball at impact is produced mostly by ISR. I believe that free motion in that phase of the serve is an important reason for the continental grip.
In other words, I don't think it is as simple as changing a grip and practicing.
Why don't you study the serve for a while?
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..................... Slice spin in tennis is the equivalent of hook spin in golf, ie, a ball that curves to the left. It is produced in either sport by a face angle that is closed to the face path.
Thus, you can hit a slice serve by coming straight into the ball with the face closed. This serve often undermines the 3.5-4.0 player trying to hit with greater pace. They swing hard but only produce side spin.
Similarly, you can hit slice by swinging out toward the net post in the ad court and meeting the ball with a square face. This is basically the serve tom is demonstrating above.
Pros use a complex mixture of ISR, elbow extension, ulnar deviation and pronation to hit the ball with a square face and somewhat in to out path.
There was a Serena video I had posted once, along with a coach's comments, which implied that she had almost no pronation on her slice serve.
To do stop-action single-frame on Vimeo hold SHIFT KEY and use RIGHT or LEFT ARROW KEYS.
The differences are small - do stop action single frame around impact using the arrow keys.
Kick serve - Notice that the racket face rises slightly during impact. The forearm-racket has more of an angle (50°/130°) to it at impact to allow the racket to continue up on the ball.
Slice serve - notice that the racket face goes across the back (is it also hitting some side?) of the ball. The racket has reached its peak height, goes across and down. Forearm-racket angle at impact (43°/137°).
Both serves use internal shoulder rotation.
Kick serve.
https://vimeo.com/27528701
Slice serve
https://vimeo.com/27528347
Can you see the direction that the racket strings are moving? At 240 fps the frame rate is just enough to see it.
There was a Serena video I had posted once, along with a coach's comments, which implied that she had almost no pronation on her slice serve.
Great videos Chas, but the shift+arrow didn't work for me.
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....................... Clearly a big kicker from the impact position as well as the upward action. Lot of ISR. She gets into an extreme ESR position, before the SSC fires. Not Roddick-level but impressive never the less. I'm guessing not too many female pros get that much ESR.