Originally Posted by slowfox
Thanks all for the posted vids. Funny, I was just thinking yesterday to search some old threads for this info. Recall seeing something a little while back about this subject. That video (if memory serves...pun intended) was a comparison of modern vs classic serves (classic being before both feet could leave the ground). The vid also talked about injury prevention.
Is this the video by Pat Dougherty? It's the only place that I've heard about the rule change about keeping the feet on the ground.
The rule was changed in 1961 according to this reference.
"There was one more rule change that affected serving, although it took awhile for the implications to be understood. In 1961, the International Lawn Tennis Federation abandoned the requirement that servers keep one foot on the ground."