Every sport has front offices that brief the referees "what to look for" before an event. One of the most well known was when Mark Cuban wrote a letter to the NBA front office during the 2005 Rockets-Mavericks series to "watch out about Yao Ming's moving screens" and immediately the next game he picked up quick fouls on pick and rolls.
In addition, the referees themselves have their own personal bias.
A bout doesn't need to be "officially" fixed for it to be biased towards one side or the other.
Last edited by astrallite; 01-16-2012 at 10:35 PM.