WI batsman Kemar Roach was given out on referral against Australia because the noise of the ball hitting the bat could be heard on the stump microphone.

Roach was the last man out this morning, handing Australia a 35-run win and 2-0 series victory, after being initially adjudged out caught behind off Doug Bollinger by umpire Billy Bowden.

The decision was challenged by Roach under the referral system and many felt replays suggested he did not edge the ball, but the original decision still stood.

The match referee Chris Broad said: "Kemar requested a review of the decision which was accepted and referred to third umpire Asad Rauf.

"The third umpire, when reviewing the decision, used a range of technologies that were available to him, including the slow-motion replays, amplified stump microphone sound (at normal speed and slow motion), approved ball-tracking technology, pitch mat generated by the ball-tracking technology and Hot Spot footage.

"While the Hot Spot was not visible on the bat during the review, the noise of the ball hitting the bat was picked up by the stump microphone which was sufficient for Asad to recommend to Billy to uphold his earlier decision.

"It must be remembered that there needs to be conclusive evidence to over-turn the decision of the on-field umpire as the DRS has been designed to eliminate the obvious umpiring errors."