The mural reads: Welcome to the football pitch... Freedom and justice for everyone. This is the prison's biggest yard and it doubles up as a small football pitch. Every sector has a team and tournaments are held regularly, with bets of more than $20,000 a year.
Good players are sought after and signings by teams from the wealthier sections are not unheard of.
"It is the same as outside - if you are good, you can make more money with your feet than with your brain," an inmate jokes.