?SUBSCRIBE http://bit.ly/SSBoxingSub Francis Ngannou shows off his punching power, scoring 999 on a boxing machine ahead of his heavyweight clash with Anthony Joshua live on Sky Sports Box Office. #shorts ?TWITTER: https://twitter.com/skysportsboxing ?FACEBOOK: http://www.facebook.com/skysportsboxing ?WEBSITE: http://www.skysports.com/boxing MORE FROM SKY SPORTS ON YOUTUBE: ?SKY SPORTS FOOTBALL: http://bit.ly/SSFootballSub ?SKY SPORTS BOXING: http://bit.ly/SSBoxingSub ?SKY SPORTS CRICKET: http://bit.ly/SubscribeSkyCricket ?SOCCER AM: http://bit.ly/SoccerAMSub ?SKY SPORTS F1: http://bit.ly/SubscribeSkyF1 ?SKY SPORTS: http://bit.ly/SkySportsSub ?SKY SPORTS GOLF: https://bit.ly/SubscribeSkySportsGolf