All Black great Sam Whitelock to retire at end of season 

TOUGH NUT: Sam Whitelock poses during the New Zealand All Blacks headshots session. Pic: Greg Bowker, Getty Images

Double World Cup-winning All Black great Sam Whitelock will retire from rugby at the end of the season.

Record All Black cap-holder Whitelock (153) - currently at French outfit Pau - will hang up his boots at the end of the current Top 14 campaign in order to "spend more time with his family".