Peter Bills: Carter shows it's not hard to be humble
Some you can categorise as scoundrels, rogues. Certain others can be condemned as cheats. Sadly, there have been plenty who have sullied the name of their sport.
The South African-born England prop forward Matt Stevens was caught taking drugs and banned for two years while his former Bath team-mate Michael Lipman bravely ran away from his club and ended up in Australia after refusing to submit to a drug test.
In France, former Beziers forward Michel Palmie hurt an opponent so badly he partially lost the sight of an eye.