Kevin Sinfield CBE has told Sky Sports Rob Burrow "taught me to be a better friend", saying a book they have written together is "one of the best things we did in 20 years of friendship." #robburrow #kevinsinfield #rugbyleague MMA: bit.ly/SkySportsMMA Netball: bit.ly/SkySportsNetball NFL: bit.ly/SkySportsNFL Rugby League: bit.ly/SkySportsRugbyLeague Rugby Union: bit.ly/SkySportsRugbyUnion Tennis: bit.ly/SkySportsTennis More from Sky Sports on YouTube: ► Sky Sports: bit.ly/SkySportsSub ► Sky Sports Boxing: bit.ly/SSBoxingSub ► Sky Sports Cricket: bit.ly/SubscribeSkyCricket ► Sky Sports Darts: bit.ly/SubSkySportsDarts ► Sky Sports Football: bit.ly/SSFootballSub ► Sky Sports F1: bit.ly/SubscribeSkyF1 ► Sky Sports Golf: bit.ly/SubscribeSkySportsGolf ► Sky Sports News: bit.ly/SkySportsNewsSub ► Sky Sports Premier League: bit.ly/SubscribeSkySportsPL ► Sky Sports Retro: http:...