All Blacks retain Whitelock until 2020

New Zealand's lock Sam Whitelock (R) at a press conference during the Rugby World Cup 2015

Two-time World Cup winner Sam Whitelock signed a contract extension Thursday that will see him stay with the All Blacks until 2020.

Whitelock, New Zealand's most capped lock with 84 Test appearances, said he was thrilled to be staying with the All Blacks and Canterbury Crusaders Super Rugby team.

"I am still genuinely excited to be playing rugby for these teams, and I feel like there is still plenty more to achieve," he said.

"There is more than enough to motivate me to keep playing and performing."

The 28-year-old played in every match of the All Blacks' 2015 World Cup campaign and all but one game leading up to their 2011 triumph.

Coach Steve Hansen said Whitelock offered world-class skills and proven leadership ability.

"It's great to have another one of our key men re-sign with New Zealand Rugby," he said.