T20 · Men'sRESULT
South Africa in New Zealand T20I SeriesSouth Africa won by 3 runs← Umpires & match officials
MATCH OFFICIAL PROFILE
Derek Walker
On-field umpire · TV umpire · Reserve umpire
219Recorded matches
5Formats
2008First recorded year
2025Latest recorded year
These are appointments in the available dataset, not a complete career record. An appearance in these records does not establish current panel membership.
Roles in the scorebook
On-field umpire 150TV umpire 36Reserve umpire 33
Recorded appointments
T20 · Women'sRESULT
Rose BowlAustralia won by 4 wickets
ODI · Men'sRESULT
West Indies in New Zealand ODI Seriesno result
Available historical scorebook coverage through 25 Oct 2026. Our Sources & methodology →