Chiefs coach Dave Rennie has the highest praise for Brodie Retallick who has re-signed with the squad.
Rennie said he was thrilled to have one of the Chiefs' key players back on board for another four years.
"We are rapt that Brodie has committed to the Chiefs and New Zealand Rugby for the next four years," Rennie said. "He's a top man whose contribution has been world class for us both on and off the field.
"He sets high standards, is a leader and highly competitive in nature.
"While his set piece and skill set are impressive, it's his work ethic that is phenomenal. He has been the glue for us, a man whose grunt work allows others to shine. It's this attitude that saw him crowned the 2014 World Rugby player of the year."