Duffin was selected for the 2010 World Twenty20 in the West Indies, playing every game of Australia's unbeaten run.

In the first match against England, both teams finished their respective innings with a score of 104.
The deadlock could not be broken in the resulting super over, with the match having to be decided by a count back on the number of sixes scored.
The only six of the game had been hit by Duffin which ultimately secured victory for Australia.

In a low-scoring final against New Zealand, Duffin put on a 30-run partnership with Leah Poulton to help Australia win by three runs and claim their maiden World Twenty20 championship.
Duffin was selected for the 2010 World Twenty20 in the West Indies, playing every game of Australia's unbeaten run.
In the first match against England, both teams finished their respective innings with a score of 104. The deadlock could not be broken in the resulting super over, with the match having to be decided by a count back on the number of sixes scored. The only six of the game had been hit by Duffin which ultimately secured victory for Australia.
In a low-scoring final against New Zealand, Duffin put on a 30-run partnership with Leah Poulton to help Australia win by three runs and claim their maiden World Twenty20 championship.
Jess Duffin