Archtkd
3rd Black Belt
This has a couple of good examples of effective punching in WTF sparring. http://www.dartfish.tv/Presenter.aspx?CR=p1c28093m618929&CL=1
Do you mean holding the leg, which would be a foul? I don't see any holding.It looked like blue hooked right's attacking leg. This was the reason red fell and probably not due to the punch. Blue looked like he hooked red's leg on another occasion in the match as well.