New Zealand second row Sam Whitelock has committed his future to the All Blacks, signing a deal through to 2020.
"There is more than enough to motivate me to keep playing and performing".
The Canterbury Crusaders captain will also remain with the Super Rugby side, who are now leading the competition undefeated from seven matches, until 2020.
Whitelock is the All Blacks' most capped lock with 84 appearances since his debut against Ireland in 2010.
"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.
The 84-test Whitelock scored two tries in a dream debut against Ireland in New Plymouth in 2010 and previous year overtook Ian Jones as the most capped All Black lock.
"On behalf of New Zealand Rugby, as well as all New Zealand rugby fans, I want to congratulate Sam and his wife Hannah on his decision".
"He's a world-class lock and together with Brodie Retallick forms one of the best worldwide locking partnerships in world rugby at present".
"Sam is also great contributor to our environment: he thinks a lot about the game. leads very well within the group and has become a very, very important component in the All Blacks".
All Blacks coach Steve Hansen says having Whitelock's services locked in place is a major boost for the national side after the announcement of the British & Irish Lions tour squad to visit New Zealand this season.
Whitelock joins All Blacks vice-captain Ben Smith in re-signing through to 2020.