In November 2011, three Pakistan players were jailed for accepting money to deliberately bowl "no balls" in a Test match against England.

CNN: ICC stands down 'sting' umpires

Information on when no balls would occur in an innings could be exploited by gamblers betting on specialist markets offered by some bookmakers.

BBC: ICC bans Salman Butt, Mohammad Asif & Mohammad Amir

No legal bookmaker in Britain takes bets on the specific timing of no-balls, so no bookmaker can have been defrauded.

BBC: Date set for Pakistan trio's appeal against suspension