International youth representative

Southee played under-19
cricket for New Zealand
from 2006-2009. His
under-19 career included
13 one-day matches - 10 at
ICC Under-19 World Cups -
and a drawn three-match
Youth Test series against
India in early 2007. His last
youth appearance was at
the 2008 ICC Under-19
Cricket World Cup, where
he was player of the
tournament.
Southee was 17 years old
when he debuted in the
2006 ICC Under-19 World
Cup on 5 February, against
Bangladesh in Colombo, Sri
Lanka. He also played
against Pakistan, Ireland,
the USA and Nepal in that
tournament. He ended
with 5 wickets at an
average of 38.8, and 113
runs at 22.6.[1] New
Zealand lost the Plate Final
to Nepal.[2]
In 2007 Southee played his
only three Youth Tests
when New Zealand hosted
India. In the second match
of the series, which New
Zealand won, he took 6-36
and 6-56.[3] He finished the
drawn series with 20
wickets at an average of
18.2.[4]
By the time Southee
appeared at his second ICC
Under-19 World Cup, in
Malaysia in 2008, he had
already played two full
Twenty20 internationals for
New Zealand. His bowling
saw him named the player
of the tournament.[5] He
took 5/11 in New Zealand's
first match, against
Zimbabwe, and went on to
take 17 wickets in five
matches, averaging only
6.64 and conceding only
2.52 runs an over.[6] Only
South Africa's Wayne
Parnell took more wickets
(18), although he played
one more match.[7]
Southee's last under-19
appearance was New
Zealand's semi-final loss to
eventual champions India,
a rain-affected match in
which he took 4/29.[8]
Within a month, Southee
played in his debut test
match. The youth squads
he played in included other
future internationals
Martin Guptill, Hamish
Bennett, and Kane
Williamson.