Derek John Walker (born 23 November 1959) is a New Zealand cricket umpire and former player. He was a member of the International Panel of Umpires and Referees until June 2016, when he was demoted to New Zealand's national panel.
Derek John Walker (born 23 November 1959) is a New Zealand cricket umpire and former player. He was a member of the International Panel of Umpires and Referees until June 2016, when he was demoted to New Zealand's national panel. (en)