best slice serve and pronation vid

D

Deleted member 771407

Guest
Ok, let me see if I can grab a court between lessons tomorrow or Tuesday.

J

Well, by all means. the more the merrier. You'll see mine soon enough btw, when I inevitably ask for advice on my serve when I get more free time. I'm a 3.5/4.0 player, I'm not trying to say I know it all, but let's be realistic for a second.

If your slice is better I'll gladly eat my hat though. I just highly doubt it.
 

J011yroger

Talk Tennis Guru
Well, by all means. the more the merrier. You'll see mine soon enough btw, when I inevitably ask for advice on my serve when I get more free time. I'm a 3.5/4.0 player, I'm not trying to say I know it all, but let's be realistic for a second.

If your slice is better I'll gladly eat my hat though. I just highly doubt it.

Understandable since most people on here are bloviating idiots who can't hit 3 balls over the net.

J
 
D

Deleted member 771407

Guest
Is there a bet involved?

I'm not sure how bad you think I am, but I do better when motivated.

J

You don't need to be bad to be worse than Simon and Onoda, they are great tennis players.
 
D

Deleted member 771407

Guest
Understandable since most people on here are bloviating idiots who can't hit 3 balls over the net.

J

I'm not sure if this is aimed at me, but in any case :
Come on, it's just a game at the end of the day. I tend to respect players who had ATP points, and their opinion. But sure, I guess they do get wrong on occasion. I'd love to see yours, genuinely.
 

J011yroger

Talk Tennis Guru
I'm not sure if this is aimed at me, but in any case :
Come on, it's just a game at the end of the day. I tend to respect players who had ATP points, and their opinion. But sure, I guess they do get wrong on occasion. I'd love to see yours, genuinely.

No, not aimed at you.

There used to be a bunch of good players and coaches on here but the idiots drove most of them away along with TW overmoderation.

I used to try to be helpful but now I just throw shade and talk about equipment and stuff.

J
 

5263

G.O.A.T.
5263, I actually agree with you that the racquetflex videos are top notch. Would love to see video of you serving.
I doubt you would love to see me serve, lol. I'm over 60 and have a host of injuries that go way back to my college football days and beyond. I did serve over 120 in my early 40s though. Maybe soon I'll have video of some of my better students serving and that would be far more indicative of the quality of my "Serve Code" instruction model. I just last week worked (for the 1st time with him on the serve) with a 5'8", 16 yr old who said he had a terrible serve before and didn't really have a serve. I really never saw it, but will take his word on it. I have a vid of him serving after about 20 mins using the Serve Code that maybe he will allow me to share. Even though we were just working on flow and timing with reduced power, he started making serves that were hitting the back fence with good force.
 

nyta2

Hall of Fame
I don't even know where to start.

I mean the fact that he can't hit the ball over the net in his demonstration and when he hits his normal "slice serve" it's as flat as can be.

If you have any specific questions I'll try to answer them.

J
I mean when I demonstrate kick serve pronation the ball goes over the net, in the box and bounces 6' in the air. You would think his slice serve would at least do something.


J
oh man, you didn't disappoint!
alot of stuff to parse here...
will review/experiment throughout the week, and comment!
thx!
 
D

Deleted member 771407

Guest
I doubt you would love to see me serve, lol. I'm over 60 and have a host of injuries that go way back to my college football days and beyond. I did serve over 120 in my early 40s though. Maybe soon I'll have video of some of my better students serving and that would be far more indicative of the quality of my "Serve Code" instruction model. I just last week worked (for the 1st time with him on the serve) with a 5'8", 16 yr old who said he had a terrible serve before and didn't really have a serve. I really never saw it, but will take his word on it. I have a vid of him serving after about 20 mins using the Serve Code that maybe he will allow me to share. Even though we were just working on flow and timing with reduced power, he started making serves that were hitting the back fence with good force.

That would be awesome. I'm looking for a good coach for my own serve atm, but it gets very expensive quickly.
 

J011yroger

Talk Tennis Guru
I doubt you would love to see me serve, lol. I'm over 60 and have a host of injuries that go way back to my college football days and beyond. I did serve over 120 in my early 40s though. Maybe soon I'll have video of some of my better students serving and that would be far more indicative of the quality of my "Serve Code" instruction model. I just last week worked (for the 1st time with him on the serve) with a 5'8", 16 yr old who said he had a terrible serve before and didn't really have a serve. I really never saw it, but will take his word on it. I have a vid of him serving after about 20 mins using the Serve Code that maybe he will allow me to share. Even though we were just working on flow and timing with reduced power, he started making serves that were hitting the back fence with good force.

0a135388d1d80ff4aa5a13982f8e4525.jpg


J
 

onehandbh

G.O.A.T.
I doubt you would love to see me serve, lol. I'm over 60 and have a host of injuries that go way back to my college football days and beyond. I did serve over 120 in my early 40s though.
Actually, I would love to see your serve. Having injuries actually makes it even more interesting to me because for many people, as we get older, we get more injuries and decreased mobility, and having good serve technique probably becomes even more important for injury prevention.

I have a vid of him serving after about 20 mins using the Serve Code that maybe he will allow me to share. Even though we were just working on flow and timing with reduced power, he started making serves that were hitting the back fence with good force.

Is the Serve Code available anywhere?
 

J011yroger

Talk Tennis Guru
Anyone want to ask this simpleton if the ball goes where the strings point with no regard to the direction of racquet travel, why doesn't the ball bounce straight up when it hits the ground since the ground points up?

J
 

J011yroger

Talk Tennis Guru
Ok, for starters when I demonstrate slice serve pronation with a choked up grip the ball actually goes over the net and to my left.

I think this gets me past at least one demonstrator.


J
 

Chas Tennis

G.O.A.T.
Here are some details of how the racket moves on the ball around impact. The internal shoulder rotation that occurs in frames before impact are not shown except in the video of the flat serve.

To do single frame use the period & arrow keys.

A serve high speed video will always have the frames before, during and after impact. It's always nice to see those clearly at about 240 fps or so.

For the high level serving technique:

The racket head must rise up while in contact with the ball for top spin and kick serves.

The racket also rises up for flat and slice serves, but not as much.

This can be directly observed in high speed videos. It appears to involve ulnar deviation, a wrist joint motion.

These composite gifs and pictures were created by Toly.

Slice serve gif. 3 frames shows racket positions before, during and after impact.
Slice-Serve-Contact-Ulnar-Deviation-CIMG0532---Copy-GIF.gif


Slice serve. The 3 frames from above. Note rise of racket vs baseline.
Chas+Tennis+Slice+Contact+Ulnar+Deviation+CIMG0532-2.png



Kick serve gif.
Kick-Serve-Contact-Wrist-Ulnar-Deviation.gif


Kick serve. The 3 frames from above. Note racket rise vs baseline.
Chas+Tennis+Kick+Contact+Ulnar+Deviation+CIMG0534-1.png



Flat serve. Use the period & comma keys to single frame. Time scale counts down to impact at "0" milliseconds.

Observe and compare all angles for the composite gifs, pictures and the video. All at impact - Arm angle tilt, forearm-to-racket-shaft angle, average direction of racket strings contacting ball vs vertical.

In order to record videos like these you need:
1) 240 fps
2) small motion blur (fast shutter)
3) bright sunny day
4) camera placement. (these were looking along the ball's trajectory)

Countdown time scale, processing & analysis was done on Kinovea. Kinovea is a free open source application that has many capabilities for video analysis and display.

The direction of the racket strings tend to be perpendicular to the spin axes shown in this ball diagram. The match would not be perfect because the racket head is on a curved path and the collision adds complications. Also, the ball spin diagram was made by studying elite players and the above images are from one pro player. But the racket string direction for the kick serve looks closer to the horizontal direction than the flat and slice serves. Print the ball diagram, draw perpendiculars to the 3 spin axes and see how close they might be. (I believe that the top spin serve has a different spin axis than the kick serve.)


99E1500A74BE43998A5E67D4FED5A748.jpg


If the OP does not have a high level serve technique, the OP is on his own.
 

Curious

G.O.A.T.
Ok, for starters when I demonstrate slice serve pronation with a choked up grip the ball actually goes over the net and to my left.

I think this gets me past at least one demonstrator.


J
That’s not a slice serve! It just lands wide in the box but does it move further to the left after the bounce? No.
 

nyta2

Hall of Fame
That’s not a slice serve! It just lands wide in the box but does it move further to the left after the bounce? No.
the second serve in that 4 ball series is really hustling out wide... i find you can't hit the side net/fence/wall on one bounce without the ball curving/bouncing to the left with the added spin... impressive that he did that with a choked up grip without trying too hard. i can only do that say 1x in a bucket (i have to hit my spot close or on the sideline AND get enough sidespin to curve it out to the side fence.
 
Just want to say that I've found this thread to be fascinating. I have a natural slice tendency to my serve, and have to force myself to pronate in an exaggerated manner to hit flat. By watching these videos and listening to you guys, I'm learning from the other side of the fence what I'm doing wrong, essentially. Not a humble brag, I'll be the first to say that I'm a clueless idiot, heheh.
 
D

Deleted member 771407

Guest
Just want to say that I've found this thread to be fascinating. I have a natural slice tendency to my serve, and have to force myself to pronate in an exaggerated manner to hit flat. By watching these videos and listening to you guys, I'm learning from the other side of the fence what I'm doing wrong, essentially. Not a humble brag, I'll be the first to say that I'm a clueless idiot, heheh.

And what did you conclude ? That you pronate a little bit too late ?
 
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D

Deleted member 771407

Guest
I think start to pronate early = flat serve, and start to pronate late = slice serve

Edit : you are correct, I said the opposite of what I meant :D If you pronate early (compared to the moment you hit the ball), you will hit the ball flat, there will be no brushing of the ball, all the speed gained through pronation is converted to forward momentum. Whereas if you pronate a little bit later you are still pronating as you hit the ball you will spin it and have a slice serve.
 
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Curious

G.O.A.T.
Edit : you are correct, I said the opposite of what I meant :D If you pronate early (compared to the moment you hit the ball), you will hit the ball flat, there will be no brushing of the ball, all the speed gained through pronation is converted to forward momentum. Whereas if you pronate a little bit later you are still pronating as you hit the ball you will spin it and have a slice serve.
Is it possible to hit a reverse slice then if you pronate too early?:)
 

Dragy

Legend
Is it possible to hit a reverse slice then if you pronate too early?:)
Actually it should be, but with conti grip it's kind of slow-down zone and possibly a close-down zone, so the swing itself might be weird, inefficient. Now with EFH grip...
 

nyta2

Hall of Fame
That’s not a slice serve! It just lands wide in the box but does it move further to the left after the bounce? No.
guessing you want to see it "slice" like freeman's vids?
i think that type of slice goes too slow though...
 

mental midget

Hall of Fame
if you just come across the ball at around 2 o'clock or so as a righty, you'll have your slice. then just experiment with your toss until it's comfortable and repeatable!
 

Curious

G.O.A.T.
guessing you want to see it "slice" like freeman's vids?
i think that type of slice goes too slow though...
The angle of a slice serve is more annoying than its pace. Also I think you can easily adjust the degree of hitting through vs brushing the ball to increase/decrease pace.
 

Digital Atheist

Hall of Fame
guessing you want to see it "slice" like freeman's vids?
i think that type of slice goes too slow though...
I already linked Sergey Belov for anyone who bothered to watch it! He actually demonstrates the "pro" slice versus your average amateur/rec way where there is no pronation (and yes the ball does curve like crazy but as you said, against good players it goes too slow). Like Simon from TTT, I am confident his slice serve is, at the very least, adequate.
 

J011yroger

Talk Tennis Guru
I already linked Sergey Belov for anyone who bothered to watch it! He actually demonstrates the "pro" slice versus your average amateur/rec way where there is no pronation (and yes the ball does curve like crazy but as you said, against good players it goes too slow). Like Simon from TTT, I am confident his slice serve is, at the very least, adequate.

Post number please?

J
 

Gyswandir

Semi-Pro
Hit some slice serves yesterday. They were as bad as Jolly’s! No lateral motion after the bounce.
Sometimes, when trying to hit a kick serve to the FH on the deuce side, I get an excellent curve of the ball, before and after the bounce, with good speed. I wish I could understand what exactly I am doing on those to make it repeatable.
Right now, I can either hit a slow slice, a la Freeman, with curve, or a fastish flat ball to the outside line, but can’t get both.
 

Curious

G.O.A.T.
Sometimes, when trying to hit a kick serve to the FH on the deuce side, I get an excellent curve of the ball, before and after the bounce, with good speed. I wish I could understand what exactly I am doing on those to make it repeatable.
Right now, I can either hit a slow slice, a la Freeman, with curve, or a fastish flat ball to the outside line, but can’t get both.
I doubt I’ll get the right feeling before hitting a thousand slice serves in a few sessions. It seems like a fine balance of hitting through the ball with the right racket face angle and swing path.
 

Digital Atheist

Hall of Fame
Oh, I like that guy but didn't think his slice was that great.

J
I hear you, but I figured given I've personally found most of their instruction useful, and since he played to a very high level, his slice serve must be good.
Edit: I also think the advice in that video is accurate.

The funny thing is, some people get more from a video like the one below, which doesn't teach the "pro slice" but is obviously still useful for a certain audience.

 
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Dragy

Legend
Hit some slice serves yesterday. They were as bad as Jolly’s! No lateral motion after the bounce.
It should depend on several factors, like whether the spin is clean sidespin (or even dose of underspin on some slowish ones, lol), or there's a fraction of topspin (@J011yroger choked up ones). The latter ones, if hit slow and spinny, get twist bounce on grippy courts. They are not far from similarly slowish spinny kick serves, just a bit different side/top ratio.
On slick fast courts it's more likely to slide at bounce and continue with no break.
 

Dragy

Legend
guessing you want to see it "slice" like freeman's vids?
i think that type of slice goes too slow though...
An observation from his demonstration:
AAxx16K.png


(Notice the frame is tilted, not vertical) he looks like hitting those with dose of underspin, which provides the bounce-back action and overall floatiness and short landing.
 

Curious

G.O.A.T.
It should depend on several factors, like whether the spin is clean sidespin (or even dose of underspin on some slowish ones, lol), or there's a fraction of topspin (@J011yroger choked up ones). The latter ones, if hit slow and spinny, get twist bounce on grippy courts. They are not far from similarly slowish spinny kick serves, just a bit different side/top ratio.
On slick fast courts it's more likely to slide at bounce and continue with no break.
Takes a lot of practice as you need to get all the angles right plus swing fast.
My spin probably dies even before the bounce, hence no action after the bounce.
 

Dragy

Legend
Takes a lot of practice as you need to get all the angles right plus swing fast.
My spin probably dies even before the bounce, hence no action after the bounce.
Well I agree with those saying it's an angle to cross sideline at which is determining. After-bounce action will anyway be weaker than pre-bounce. Now if you managed to pull him wide enough, who cares?
 

Curious

G.O.A.T.
Well I agree with those saying it's an angle to cross sideline at which is determining. After-bounce action will anyway be weaker than pre-bounce. Now if you managed to pull him wide enough, who cares?
I’ll see tonight if there’s a big difference between RF97A and Pure Aero on slice serve.
 
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