INCREASED scrutiny of television cameras, the introduction of citing officers and the use of sin bins has led to rugby cleaning up its act in recent years.
But there are still players who occasionally like to take matters into their own hands.
Here, we profile a few characters who could keep the officials busy...
BAKKIES BOTHA, SOUTH AFRICA, LOCK
Botha is one of the most uncompromising players in the world. He is always likely to be found in the middle of a scrap.
CHRIS HORSMAN, WALES, PROP
HORSMAN is a fierce scrummager but the big criticism against the tight-head is his lack of discipline. His Wales debut was delayed after he received a ban for stamping against Sale
ALI WILLIAMS, NEW ZEALAND, LOCK
In 2005 Williams was banned for stamping on the head of his own All Blacks captain Richie McCaw.