Have a Question for Me?

[alexandrafranco]

Dear Mr Yandell,
could you look at

http://www.tennisplayer.net/bulletin/showthread.php?p=20241&posted=1#post20241

Does it make any sense to talk about "Flip" for backhand?
Thank you

I bought Gordon's presentation dvd on the backhand, and it is very interesting, he explaind the flip, and the different ways they occur, Nadal and Djokovic, do it differently, if I remember correctly there are 3 movements related to the BH flip... so I am also looking forward to how he is going to present it to Tennisplayer.net

[alexandrafranco]

Flipping

Great! Is there anywhere on the site that you talk about this connectivity to phone or ipad? Looking forward to Macci's articles. I did buy his forehand video . I see Ryan Harrison, Berdych with thumb down all the way to the end of the backswing and then I see Federer with thumb facing the side at the begginning and then thumb going down during the backswing. It seems to me that there is independant arm movement to take the racquet from the begginning of the stroke to the end of the backswing. Is this correct? Or do you start the racquet with an semi-western grip and unit turn and then just extend your arm to pat the dog. I tend to pull on the handle and bring it to pat the dog as I'm unit turning. Is thumb down in the backswing a trait of the B,E.S.T forehand? Or is palm down enough? Palm down will go from neutral wrist at the end of the backswing to flip to radial deviation but the thumb down will go from ulnar deviation to radial deviation for more flip, or maybe I am flipping trying to understand this and you could just tell me where should my thumb be in the backswing? thank you, alex

[johnyandell]

Alex,

There won't be an app. The site is hardwired to recognize your device and will send the correct version to your ipad or phone automatically! Much better than dual sites or having to use an app! Check it out. As for Macci, that starts with the March issue.

John Yandell

[alexandrafranco]

Mobile app

When do you expect to have the mobile app out? Very curious to see the Macci fh article you said you are keeping for the app.thank you

[johnyandell]

Julian,

Forget about that YouTube footage--look at the incredible stuff in the High Speed Archive! You can see dozens there that bear on this point and see the flip frame by frame...

[julian1]

Thank you

Not sure. Brian G. will eventually be getting into that so I am going to leave that for him to explain. Once I understand what he thinks maybe I can answer...

Thank you
I have thought the topic is interesting
possible videos

http://www.youtube.com/watch?v=wlmhJTUFEfM

http://www.youtube.com/watch?v=lPBM-hE1Dhw

Regards,
Julian

[johnyandell]

Not sure. Brian G. will eventually be getting into that so I am going to leave that for him to explain. Once I understand what he thinks maybe I can answer...

[julian1]

Flip for backhand?

Dear Mr Yandell,
could you look at

http://www.tennisplayer.net/bulletin/showthread.php?p=20241&posted=1#post20241

Does it make any sense to talk about "Flip" for backhand?
Thank you

[johnyandell]

Stotty,

Nope if you want lines and circles, etc then it's not QT. So far as the cut and paste though definitely. QT Pro that is. This is the same program for downloading the archive files on the site.

[stotty]

Stotty,

Before you spend any money , have a look at Kinovea which is a free open source software which can do many of the things that Motion pro and Dartfish do.

Glenn

Thanks, I'll take a look. I'd like to be able to measure angles...and overlap one clip over another. It's all about speed. When you have dozens of students, you need to be able to cut, paste, add lines and circles, and edit darn quick...a purpose-build product is what I need...something dead easy is to use. Not sure Quicktime can do all I need.

[lobndropshot]

my .02

I am sure that I can see the ball on the racket at contact. But, I cannot see the detail that can be seen when I am watching again in high-speed.

[johnyandell]

Jon,

I am not an eye doctor that's just what I have been told by experts.

Stotty, Glenn,

I just use Quick Time--for side by side you don't really need anything else.

[gsheiner]

Stotty,

Before you spend any money , have a look at Kinovea which is a free open source software which can do many of the things that Motion pro and Dartfish do.

Glenn

[stotty]

Motion Pro

John,

I was thinking of buying Motion Pro. Isn't that the software you use? I'll assume it's a good product if so. Let me know...

Dartfish is great but expensive...

[jryle1]

For everyone--yes! That's exactly what the clips are for. To help players and coaches. The only limitation is that they cannot be uploaded onto a public web site.

The human eye is 20 fps, about. The contact is 1/250 of a sec. The human eye is about 10 times too slow to see what really happens. But 250fps video has the ball on the strings on every shot. 500fps even better.

Just wondering about the human eye idea. Is that scientifically proven? I was just researching it on google and like tennis technique there seems to be a lot of debate about it on a couple of different sites I checked out!

Also, Happy New Year, hope you had a great christmas and hears to a great year of tennis and tennis research/study!