Football referees aren’t just wrong, they’re biased

By James Zuccollo 18/06/2014

Football penalties are often controversial and the first couple of days of the World Cup have already provided one dubious decision. Luckily for the referee’s personal safety it favoured the hosts, Brazil. But, according to Randal Olson’s fascinating analysis of penalty decisions, there may be more than luck involved:

70.6% of all penalty kicks were awarded to the Home team.


Similarly, if the Away team received the first penalty kick, then the Home team received the second penalty kick 92.5% of the time — an incredible display of referee bias.

Check out the whole post for all the details and a bunch more stats!