Derek Walker as Umpire in Women's International Twenty20 Matches (6)

(count excludes the abandoned match in which no play was possible)
Officials are not known for all matches on the database - if you can fill in any missing details please contact us
18th February 2011 Australia Women in New Zealand 2010/11 3rd Twenty20New Zealand Women v Australia Women Queen's Park, Invercargill witt101
19th February 2011 Australia Women in New Zealand 2010/11 4th Twenty20New Zealand Women v Australia Women Queen's Park, Invercargill witt102
20th February 2011 Australia Women in New Zealand 2010/11 5th Twenty20New Zealand Women v Australia Women Queen's Park, Invercargill witt103
22nd February 2012 England Women in New Zealand 2011/12 3rd Twenty20New Zealand Women v England Women Eden Park, Auckland witt134
5th March 2014 West Indies Women in New Zealand 2013/14 3rd Twenty20New Zealand Women v West Indies Women Queen's Park, Invercargill witt239
25th March 2018 West Indies Women in New Zealand 2017/18 5th Twenty20New Zealand Women v West Indies Women Seddon Park, Hamilton witt404
13th February 2020 South Africa Women in New Zealand 2019/20 5th Twenty20New Zealand Women v South Africa Women University Oval, Dunedin witt845a