On 6 December 2009, on the third day of the 2nd test against Australia, Benn managed his first five-wicket haul with career best figures of 5/155 after bowling 53 overs for the innings. In the third test between West Indies and Australia at the WACA, Benn came under scrutiny for a mid-pitch altercation with Brad Haddin and Mitchell Johnson after tangling with Johnson when attempting to field the ball and he was subsequently banned for two ODIs after being found guilty of breaching the spirit of the game.