David Howman is to leave his position as chief executive of the World Anti-Doping Agency ©Getty Images

David Howman is to step down as director general of the World Anti-Doping Agency (WADA) after 13 years.

The New Zealander, who took up the position in 2003, is expected to move on when his contract expires just over a year from now in June 2016.

Having started working for WADA initially as chief operating officer and special counsel, Howman has emerged in recent times as an authoritative, plain-speaking public voice for the agency as it has established itself and become part of the global sporting landscape. 

“He has been a very good director general,” Sir Craig Reedie, WADA President, told insidethegames, describing his colleague as “hard-working” and “knowledgeable”.

Previously, Howman served as chairman of the New Zealand Sports Drug Agency between 2000 and 2003.

He was also President of New Zealand Tennis and Commissioner for New Zealand Rugby for a number of years.

A highly ranked junior tennis player, he is a former member of the New Zealand Junior Davis Cup squad.

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