Surely it could be a lot easier to fix than a cricket match or a rugby match, as points are so few and thus the referee could hold much power in assisting teams to get one or two points (or preventing them) ...
http://www.espnfc.com/blog/marcotti-musings/62/post/1929386/match-fixing-more-regulation-needed
http://www.theguardian.com/football/2014/apr/28/honduras-nigeria-world-cup-match-fixing
makes me wonder a little ... hmm ...
(sorry been watching a lot of news around mr vincent and mr cairns)