Different types of corruption depending on the promoters/country. British fights often have premature stoppages, be interesting to see if the doctor inspired retirement in the Cleverly/Murat fight was a one off or the start of a trend. In germany there's long been the suspicion that fighters know the score throughout the fight. Alexanders recent 'wins' against Kotelnik and Matthyse have appeared to be good,old fashioned blatant robberies. As well as the Shuemenov/Campillo fiasco, probably the worst decision in recent memory.
If you are going with US locale's then Houston wins it hands down. Seen some horrible decisions and horrible ref'ing come out of there.
Japan is a fair and square place. can´t remember the last time a guest fighter found himself on any unfair disadvantage over there
If you are from Argentina you better knock the guy out cold if you want a chance of winning in America.