Just moments after claiming his second World Cup winner’s medal, All Black centre Sonny Bill Williams gave it away to an extremely lucky fan during the team’s lap of honour.

Williams, a rugby league convert who has also boxed professionally, gave his gold medallion to a fourteen-year-old pitch invader ( identified since as Charlie Line ).

The boy’s excitement was a delight to see and capped off a great evening of rugby. Williams gave the medal to the boy after seeing him smash tackled by security as he ran on to the pitch to greet his heroes.

“If that was a younger brother or cousin I would have given the security guard a hiding," explained Williams. "But I just picked the kid up and took him back to his old lady and tried to make the night more memorable for him. Better to be hanging around his neck than mine.”

Williams later, however, was presented with a replacement medal at the end-of-tournament World Rugby Awards dinner in Battersea.

Sonny-Bill Williams explains why he gave his RWC Winners medal to young lad - refreshing lack of ego. Chapeau. pic.twitter.com/3SsTtrWg9z — Brian Moore (@brianmoore666) October 31, 2015

Williams came on at half-time to win his 33rd cap and immediately contributed to the match by producing two offloads in the move that led to a critical try.