yeah but it always takes a while to restart the game every time someones contact falls out
http://upload.wikimedia.org/wikipedia/commons/b/bd/Scrum-1.JPG
Dont know what Rugby you have been watching. Check out the video. Guarantee the Rugby League boys are tougher than anyone in the NFL. They are nuts and not uncommon for them to play on with bad injuries including broken bones
Rugby league big hits 09 compilation - YouTube