In 1998, O'Driscoll played for the Ireland U-19 side, which won the Under 19 Rugby World Championship.
On 21 October 2007 she was awarded the 2007 IRB's Women’s Personality of the Year at Pavillon d'Armenonville in Paris's Allée de Longchamp for being the first female to referee at a male IRB tournament, when she took charge of the 2007 Under 19 Rugby World Championship match between Zimbabwe and Canada on 4 April at Queen's University of Belfast).
The under-20 tournament replaced the previously held Under-19 and Under-21 Rugby World Championship's.
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In 1998, he enjoyed his first major appointments as assistant coach for Western Province in the Currie Cup and also the South Africa national under-19 side, which he took to third in the 1999 Under 19 Rugby World Championship.