William Slater is an Australian former professional rugby league footballer who played in the 2000s and 2010s. An Australian international and one-time captain of the Queensland State of Origin team, he played his entire club career in the National Rugby League for the Melbourne Storm, with whom he played in seven NRL Grand Finals. Slater also set the club's record for most ever tries and NRL record for most ever tries by a fullback. He amassed 190 NRL tries during his career which is currently 2nd most of all time, behind Ken Irvine. Slater also won four grand finals, the Clive Churchill Medal twice and the Dally M Medal with the Storm. With the Kangaroos he was the 2008 World Cup's top try-scorer and player of the tournament and won the 2008 Golden Boot Award as the World player of the year. Slater was also the winner of the television game show Australia's Greatest Athlete in 2009 and 2010.