Trevor Chappell Underarm Did You Know That The Famous Underarm Delivery By Trevor Chappell Was A No Ball By Rule?

Did you know that the famous underarm delivery by Trevor Chappell was a no ball by rule? - trevor chappell underarm

not given, however, have a free ball, the referees did not catch, nobody notices that this movement
Source --
http://en.wikipedia.org/wiki/1981_undera ...