Footwork For Forehand

[llll]

in an open or semi open stance forehand as i push off the right leg (im right handed) sometimes my left leg goes backward. i still get left shoulder to right shoulder rotation. other times the left leg stays and i sort of pivot on it . i am not in the air. this does not occur on neutral stance hits . my left foot going backward caught the eye of my pro and didnt like it. is this flawed technique?

[oliensis]

From another thread, I posted these videos of Federer doing just that...the whole thread might be of interest to you at:

http://www.tennisplayer.net/bulletin/showthread.php?t=1255

Fernando Gonzalez: Open Stance w/ body torquing around vertical axis of (roughly) the spine (and w/ some counter-rotation of left leg).

http://www.tennisplayer.net/members/strokearchive/pro_men/fernando_gonzales/fg_forehand/fg_fh_center/fg_fh_center.html?FGFHCenterOpenStanceFront1.mov

Agassi: Neutral Stance w/ body torquing around vertical axis of left hip

http://www.tennisplayer.net/members/strokearchive/pro_men/andreagassi/aa_forehand/aa_fh_center/aa_fh_center.html?AAFHCenterNeutralStanceSide.mov

Now here are some odd ones:
Federer in neutral stance, but w/ axis of rotation in right hip, and w/ left leg moving back from neutral stance:

http://www.tennisplayer.net/members/strokearchive/pro_men/rogerfederer/rogerfederer_forehand/rogerfederer_fh_center/rogerfederer_fh_center.html?FedererFHCenterSide4.mov

Federer semi-open stance w/ axis of rotation in right hip and left leg moving back after hit

http://www.tennisplayer.net/members/strokearchive/pro_men/rogerfederer/rogerfederer_forehand/rogerfederer_fh_center/rogerfederer_fh_center.html?FedererFHCenterFront1.mov

(is this a consequence of a lack of counter-rotation of left leg?)

Federer open stance w/ axis of rotation in center (spine), but w/ so much total rotation that even w/ brief counter-rotation of left leg, that leg still gets whipped around to land behind, rather than in front of him.

http://www.tennisplayer.net/members/strokearchive/pro_men/rogerfederer/rogerfederer_forehand/rogerfederer_fh_center/rogerfederer_fh_center.html?FedererFHCenterRear2.mov

Same for Fed, but offensive shot (when he lands on retreating left leg it's not always defensive and sub-optimal, sometimes a function of so much rotation that the left leg's gotta go back after it goes forward, just like the racket follow-through)

http://www.tennisplayer.net/members/strokearchive/pro_men/rogerfederer/rogerfederer_forehand/rogerfederer_fh_center/rogerfederer_fh_center.html?FedererFHCenterCrosscourtFront1.mov

More normal Fed w/ open stance--left leg lands moving forward (at least a little).

http://www.tennisplayer.net/members/strokearchive/pro_men/rogerfederer/rogerfederer_forehand/rogerfederer_fh_center/rogerfederer_fh_center.html?FedererFHCenterSide1.mov

in an open or semi open stance forehand as i push off the right leg (im right handed) sometimes my left leg goes backward. i still get left shoulder to right shoulder rotation. other times the left leg stays and i sort of pivot on it . i am not in the air. this does not occur on neutral stance hits . my left foot going backward caught the eye of my pro and didnt like it. is this flawed technique?